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Why can't the TV see the laptop via cable? There is no sound via HDMI to the TV from the computer

Today, you can connect a computer or laptop to almost any TV. This allows you to watch movies, photos, play on the big screen, and also solve many other tasks. From time to time, users are faced with the fact that the computer does not see the TV via HDMI. In most cases, you can fix this problem yourself, but sometimes the equipment has to be sent in for repair due to a damaged connector. All ways to fix the problem with your own hands are further in the material.

Features of HDMI connection and causes of problems

HDMI (High-Definition Multimedia Interface) is a modern interface for transmitting video and audio signals. Almost all modern equipment today is equipped with such connectors.

Unlike cables that transmit an analog signal, HDMI is designed to broadcast content in digital format with Full HD and 4K resolution. These are the highest quality methods of transmitting information today, which are not possible through VGA, RCA, component cable or other types of connection. Since its release in 2002, the HDMI standard has continually changed, increasing throughput cable, support for new formats was added, as well as additional useful functions.

On a note! In HDMI 1.4 and subsequent versions, support for 3D, 4K and Internet signal transmission was implemented. This method of connecting to the Network is more different high speed than a Wi-Fi connection, as well as stability and reliability.

Most common 3 HDMI form factors: Type A (HDMI), Type C (mini HDMI) and Type D (micro HDMI). The second and third types are intended for smartphones, digital photo and video cameras, as well as other mobile and portable equipment.

When connecting a computer or laptop to a TV via HDMI, the user may experience that the image is not displayed on the screen. There can be many reasons for this, but the most common are:

  • faulty cable;
  • broken connector;
  • broken TV or monitor settings;
  • outdated graphics adapter drivers;
  • the presence of viruses on your PC or laptop.

To identify the cause of the malfunction and fix the problem, the user will need to diagnose the equipment and cable.

Diagnosis and troubleshooting

A consistent check of all possible causes of the malfunction will help you understand the situation when a computer or laptop does not transmit an image to the screen of the television panel. Diagnostics should begin from checking the cable, then the connector, then go to the equipment settings etc.

Cable problem

If there is no signal when connecting your PC to your TV, the first thing you need to pay attention to is the condition of the cable, especially if it has just been purchased and has not been tested. It’s easy to make sure it’s working – you just need to try connecting a different cable or test the existing one on other equipment. If it functions properly, you need to look for the problem in the television panel or in the computer.

Connector problem

If the cable is working, but there is still no image on the TV screen, you need to check the integrity of the connectors. Perhaps they were damaged or stopped working due to a power surge.

Advice! Typically, modern TVs, whether LG, Sony, or another manufacturer, have several HDMI inputs. Therefore, you can diagnose the connector by switching the cable to any adjacent port, but you must remember to select the appropriate input on the television panel using the remote control.

If nothing still works, you need to check Is the connector on the system unit or laptop working?. There are two options:

  • if your computer has a DVI output, you can use a DVI-HDMI adapter and connect your equipment;
  • Disconnect the same cable from the PC and connect it to another device with an HDMI connector, for example, a DVD player.

If, after checking using one of the above methods, a picture appears on the screen, it means that the connector on the PC or laptop is broken.

TV settings

If checking the cable and connectors has ruled out their malfunction, then you need to make sure that the TV is configured correctly and the signal source is set correctly. To do this, you need to look at the connector to which the cable is connected - usually its name and number are indicated next to it, if there are several identical inputs. Then, on the remote control or control panel on the TV body, you need to press the “Input” or “Source” button (the designation may differ depending on the brand of television equipment) and make sure that no error has occurred, and the exact connector to which it is connected is selected as the signal source cable.

Monitor settings

If the connection is made to a computer together with a monitor, and after turning on the equipment, the TV does not show anything or displays a poor image, you will need to make a number of changes in the settings on the PC. So, in Windows 7, the user needs to right-click on the desktop, call up the context menu and select "Screen Resolution".

On a note! For other operating systems, the required section will be called differently: “Graphics characteristics” - for Windows XP, “Display settings” - for Windows 8, 8.1 and 10.

Next, you need to select the appropriate option for displaying the image on the second screen. To do this, you need to refer to the “Multiple Screens” (Displays) section. If there is no image on the TV, then most likely only the monitor screen is selected in the specified section. To display a picture on the TV panel display, you need to install duplication or repetition(the two screens will have the same image), extension(in this case the second screen becomes a continuation of the first), or using only the second screen. The last option assumes that the picture will disappear from the monitor display and will be displayed only on the television receiver.

Advice! For Windows 7, 8, 8.1 and 10, there is another way to change the screen mode - you need to simultaneously press the Fn key (with the Windows brand icon) and the P key. The “Project” menu will appear on the right, in which the user can select one of four possible modes display the picture.

Usually, the resolution is automatically adjusted on the connected screen, but if this does not happen, and the picture quality does not suit the user, you must go back to “Screen Resolution” (or another section corresponding to the installed OS) and set the resolution value that matches the TV settings. In this case, the image on the monitor screen will deteriorate. You can get a high-quality picture on two devices only if the display and panel have the same resolution.

Outdated video card drivers from nVidia, AMD or other companies may also be the reason why the PC does not connect to the TV. To eliminate it, the user needs open Device Manager, find the video card and see the version of the installed driver. Next, you should go to the manufacturer’s official website and download the latest version of drivers for the graphics adapter.

Setting up the sound

If, when you connect a laptop or computer to a TV receiver, the image on the big screen is broadcast, but there is no sound, you need to make changes in the PC settings. To do this, the user should go to “Hardware and Sounds” in the “Control Panel”, and then go to the “Sound” tab ( for Windows 10 – “Control Panel” - “Sound”).

Advice! You can also open the desired section by clicking on the speaker icon in the tray (lower right corner of the screen), calling up the context menu and selecting “Sounds”.

The “Playback” tab displays all devices connected to the computer for sound output, including TV speakers. If there are no devices in this section, you need to right-click on any free area and assign display of connected and disconnected devices by checking the boxes next to the corresponding lines.

After all connected devices have appeared in the “Playback” tab, you need to find the name of the TV, click on it and select "Enable". On the rest of the connected equipment you will need to perform the same steps, but click on “Disconnect”. Use the “Apply” button to confirm your choice, after which sound should appear in the TV speakers.

Viruses on PC

In very rare cases, viruses or malware prevent the computer from displaying images on the TV screen. However, this possibility should not be excluded, especially if the most likely causes of the malfunction have been rechecked, but there is no result. To check this version you need to download and install any of the paid or free antiviruses or use healing utilities. The advantage of the latter is that they usually do not require installation and can be launched from a USB drive.

The most popular and effective utilities include Kaspersky Virus Removal Tool and Dr. Web Curelt! Once the scan is complete and threats have been removed, you will need to to restart a computer for the changes to take effect. After turning on the devices, you will need to check again whether the signal is being received from the computer to the TV via the HDMI cable.

Checking for signal presence

If the TV receiver has stopped seeing the computer and as a result does not display an image on the screen, you need to check the signal by doing the following in turn:

  • inspect the equipment, determine the connectors and type of cable through which the connection will be made;
  • disconnect the TV and computer (laptop) from the network;
  • connect both devices with a proven HDMI cable;
  • turn on the television panel, use the remote control to select the connector to which the cable is connected;
  • turn on the laptop - if there is a signal, an image will appear on the television panel;
  • if there is no signal, you need to open Device Manager on your PC and see what active connections the computer sees;
  • If the device detects a connection via an HDMI cable, but there is no image on the screen, you need to connect the equipment with a VGA or DVI cable and select the appropriate input on the TV.

If the image does not appear on the television panel, you should contact service center, as this indicates an internal failure of the TV.

There are several rules and nuances when connecting equipment via HDMI.

  1. Experienced specialists advise connect equipment with an HDMI cable in the off state. According to them, even the television cable should be temporarily disconnected from the antenna socket.
  2. External inspection of the cable implies checking for broken, rusted, oxidized contacts, fractures, kinks wires, presence of dust or debris inside. The connectors should also be free of broken contacts and dirt, and the port itself should not be loose. All these disturbances affect the operation of the cable and interfere with signal transmission.
  3. When updating video card drivers, you should download the current version from official page manufacturer. Only in this case is the installation of the latest working version of drivers guaranteed.
  4. To connect your TV to your computer, you should purchase good high quality cable HDMI. Cheap wires significantly degrade the signal quality and are not reliable and stable.

So, if when you connect a PC to a TV via HDMI, no image is displayed on the panel screen, there may be many reasons for this. Some of them are associated with the user’s banal inattention and can be eliminated immediately on their own. Sometimes the situation is much more serious and requires cable replacement. In rare cases, you will have to take one of the devices in for repair. To find out which option led to the absence of a picture on the television panel screen, it is necessary to conduct a thorough diagnosis of the connection and technology. This will allow you to understand what to do next to fix the problem.

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There are various ways to connect a computer or laptop to a TV. One of them is the use of HDMI. Have you installed the equipment, prepared the device for output, but the TV does not want to broadcast the picture from the screen? The article discusses problems with connecting a cable to a computer and offers instructions for resolving the problem.

Diagnostics

If your TV does not see a device connected via HDMI, and a message indicating that there is no connection is displayed on the screen, then simple instructions will help solve the problem.

The type of error on the TV screen may vary depending on the model and brand

Cable check

First of all, eliminate the possibility of damage to the cable itself. To do this, connect the wire to another device and check the image output. You will immediately discover the cause of the problem or narrow down the troubleshooting area. If the cable does not work with other equipment, the recommendation is obvious - you need to purchase a new one. If everything works, then you should check whether the signal source on the TV is selected correctly:

  1. On the TV remote control, find the button for selecting the external input option. The most common ones are: HDMI, source and input.
  2. Go to the menu.
  3. Now you need to select the input to which you previously connected the cable and confirm the action.

Check the number of the socket to which the cable is connected

Check monitor support on laptop

The problem may occur if the laptop or computer monitor is configured as the main one. To change the main output device, you need to go to the settings on the PC itself.

Windows 8

For Windows settings 8 you need to do the following:


Windows 7

In Windows 7, in addition to the connection method through the control panel, there is a special program that comes with the system:


Windows 10

To set up TV output in Windows 10, follow these steps:


Windows XP

Despite the fact that support for this OS has long been discontinued, you can still connect modern TVs to it:


Mac OSX

Connection to Mac system OSX is carried out using a specialized Belkin Mini DisplayPort to HDMI cable.

The Belkin cable can be purchased at any store that specializes in Apple technology.

As in other systems, you have the opportunity to select the required monitors and their number: built-in and/or external. There are three monitor modes on Apple. We are interested in the extended desktop:


Linux

We will look at the instructions for the most popular distribution - Ubuntu:


Checking the video card

Quite often, the problem with displaying images on the screen is outdated software of the video card to which we are connecting. To eliminate this problem, you need to install the latest driver. But first you need to find out the exact name of the video card model.

On Windows

We will look for information about the video card in the “Device Manager”. To enter it, use the universal method that works on any version of the OS:


On Mac OSX

On a computer running Mac OSX, the algorithm is approximately the same:


On Linux

The easiest way to find out information in this system is through the terminal:


Driver update

Now we have information about the video card model. We follow the instructions common to all systems:

  1. Go to the official website of the video card manufacturer.
  2. Select your model through the search and download the driver.
  3. Install them. You may need to restart your computer.

Checking the health of the HDMI port on your TV and laptop

Inspect the HDMI connector. It should not be severely damaged, metal parts should not be broken or bent. If the port is damaged, you will need professional help to replace it.

The connector may break if used incorrectly: pulling the wire too sharply, trying to connect the wrong cord, etc.

The easiest way to accurately determine the functionality of the port is to use an HDMI cable that you are sure is working. So if you have one on hand, use it.

Checking connectivity through other connectors

If the TV does not display an image due to a damaged HDMI port, it is not necessary to immediately contact a service center. If the other ports are working properly, you can purchase an adapter and connect it to the corresponding socket.

Types of adapters

Adapters come in the following types:


Audio playback problems

If the device is connected and working, but the connected TV does not play audio, then there may be two reasons for this. Perhaps you are using an adapter to connect HDMI to an external monitor that is not equipped with an audio interface. In this case, the solution is obvious - change the adapter. But most often the problem with audio playback on an external device is due to incorrect hardware settings.

Windows 7 and 8

The setup is identical in these two versions of Windows:


Windows 10

To configure audio output in Windows 10:


Windows XP

In Windows XP, the settings are made in the following way:


Mac OSX

The setup on Mac is as follows:


Linux

Most distributions use Pulseaudio Volume Control software. Use the program to configure audio output as follows:


Correcting HDMI connection errors is not a difficult task if you have clear and accessible step-by-step instructions in front of your eyes. Now technical problems will not be able to ruin your pleasant evening in the company of your favorite films or TV series.

I noticed that very often questions arise that arise when DLNA setup server on your computer to watch movies on a TV that supports DLNA.

Namely, questions about the problem when the TV does not see the DLNA server created on the computer. And accordingly, he does not see the files (films, photos, music) that are on the computer.

There can be many reasons why such a problem may appear. But, most likely, this is due to the fact that the antivirus or firewall installed on your computer (possibly standard Windows firewall), blocks the connection. They prevent your TV from seeing movies that are on your computer.

Here are the actual instructions for setting up DLNA:

If you did everything according to the instructions, but your computer still doesn’t see the TV, then first:

  • Make sure that the server is running on your computer (laptop). The program you use should write about this.
  • Check if your TV supports DLNA technology. This can be found in the specifications of your TV model. (just look on the manufacturer's website). If your TV has a Smart TV function, then it supports DLNA.
  • Make sure that your TV and computer are connected to the same router. And that the Internet works on both (internet access is not required, but this indicates that the devices are indeed connected to the network).
  • If, for example, it didn’t work with the “Smart Share” program, then try “Home Media Server (UPnP, DLNA, HTTP)”.

If everything is fine with the above points, then you need to try disabling the antivirus. I know for sure that Avast likes to block such connections. But other antiviruses are no exception. You should also try disabling the firewall if it is installed on your computer. AND .

There is no need to completely remove your antivirus. Almost every antivirus has the ability to completely disable protection for a while.

As a rule, this can be done by right-clicking on the antivirus icon in the notification panel and selecting something like Pause protection.

This is how it is done in Kaspersky Internet Security:

Perhaps the antivirus will also ask you for how long to disable the protection, or ask you to confirm the disabling. Let me remind you that I showed the example of Kaspersky Internet Security. If you have a different antivirus, then things may be a little different.

After disabling the protection, go to the required menu on the TV (on LG, this is for example Smart Share) and see if your TV has seen the contents of your computer. You can also turn off and turn on the TV.

I'm sure everything will work out. If everything works and the TV displays folders or files that are on the laptop, then the problem really is with the antivirus.

Turning off the antivirus every time is also not an option. Therefore, you need to try adding your connection to the antivirus exceptions. Or, it may block the program itself, for example “Home Media Server (UPnP, DLNA, HTTP)”. In this case, the program must be added to the exceptions. Each antivirus does this differently. Look for something like: application control, application activity management, network activity, firewall.

As for the problems in the Wi-Fi routers themselves, through which the devices are connected, they have their own tricks. In theory, there is no need to make any settings in the routers themselves. But, I saw advice in the comments that you can try unchecking the “Prohibit multicast” option on the tab where Wi-Fi settings are set.

Here's the comment:

Such a point, for example in Tp-Link routers, I haven't met. If your router settings have such an item, you can try it. Best wishes!

Also on the site:

The TV does not see movies that are on the computer (laptop) after starting the DLNA server updated: August 23, 2015 by: admin

If you have difficulties or have questions about connecting your laptop to your TV via HDMI, this article will help you figure it out. There is nothing complicated about this, but there are a number of nuances that need to be taken into account. Here we will tell you step by step how to connect correctly.

Connection cable

To connect your laptop to your TV, you will need an ordinary and budget HDMI cable (no need to buy an expensive cable). However, if you have a 3D-capable TV and use this mode frequently, you will need a cable that supports HDMI version 1.4 or higher.

Carefully! Do not connect the cable to the Output connector because this may burn it or cause other equipment malfunction. Perform all actions with the TV and laptop turned off (be sure to remove the power plugs from the sockets).

Connection procedure step by step

To connect a laptop to a TV via HDMI, the first thing you need to do is find the required HDMI connector. It is located on the back or side of the TV. However, the TV often has several HDMI connectors, so you need to find the one located in the “Input” block and marked with the number “1”.

A similar connector must be found on your laptop. In principle, any HDMI connector will do.

There are situations when a TV or laptop does not have HDMI connectors. In this case, you can use an adapter from DVI to HDMI, but then the connection will become more complicated and will require separate settings for audio transmission (this is not described in this article). The second option is to choose a different connection method: via Wi-Fi, via VGA, via tulips.

After all the connectors have been found, you need to insert the cable into them (one end into the TV, the other into the laptop). At the same time, check the tightness of the connection - the cable must be inserted all the way.

Outputting images via HDMI

After connecting the laptop to the TV via HDMI cable, turn on the laptop and TV.

After booting the laptop, we need to check that the screen resolution is set correctly. We will describe the steps for Windows: you need to right-click and select “Screen Resolution” from the drop-down menu and then check the settings. If you have a Full HD TV, most likely the optimal resolution for it is 1920x1080. If you have an “HD Ready” TV, then its optimum is 1366x768.

You have several options for connecting your TV and laptop (depending on your needs).

  • If you select "Duplicate these screens", the TV will show what's on the laptop.
  • If you select "Extend these screens" by making your laptop monitor your primary monitor, your TV screen will become your desktop.

After checking the screen resolution, you need to set the screen refresh rate. To do this, go to “Advanced Settings” and select your TV. Most likely, it will be displayed as a monitor (for example, "generic PnP monitor"), because... Windows usually calls all connected display devices monitors. So, having selected your TV, in the “Color quality” field you need to set “True Color (32 bits)”, and in the “Screen refresh rate” field - more than 60 Hz. If your TV supports a frequency of 100 Hz, it is better to set it. However, you can try to set different frequencies and evaluate the image quality and the presence of interference at each of them.

Outputting sound to TV via HDMI

To connect a laptop to a TV via HDMI and establish correct interaction, in addition to the picture, you also need to configure the sound transmission.

If you have a fresh video card driver installed, then there should be no problems with sound transmission. To check your driver, click on the speaker icon located in the lower right corner of the laptop screen. If you see, in addition to the volume bar, an icon called “HDMI Digital Audio Device” or “High Definition Audio Device,” then everything should be fine.

If you don’t see such an icon, then you need to find it through “Device Manager” (Start > Control Panel), selecting “Sound, game and video devices” there. If you see the device “Device supporting High Definition Audio” there, then you can configure the sound through it. If there is no such device, you will need to reinstall or update the video card driver.

Possible problems connecting a laptop to a TV

Why can't my TV see my laptop via HDMI?

It could be:

  1. The HDMI cable is faulty. Please use a different cable.
  2. HDMI input is faulty. This is a serious problem, so we recommend that you contact a TV technician.
  3. The wrong input source is selected. Enter the TV menu and check that the selected input is correct. For example, it may be that the cable is connected to “HDMI-1” and “HDMI-2” or “Component” is selected.

The picture shows an incorrect setting. To reconfigure, select Define and select manually.

Why is there no sound after connecting my laptop to the TV via HDMI?

It happens that everything is done correctly, but there is no sound. This may be due to the fact that not all TV models accept sound at all input connectors. Try connecting devices to different HDMI connectors.

Problems may also be associated with a faulty cable, which can be checked by replacing it.

Why doesn't my laptop see the HDMI cable from my TV?

A very common question and quite often it appears due to the fact that the wrong display method is defined by default (for example, VGA). To correct the situation, you need to override the display method by manually selecting it.

Happy setup!

We hope this article was useful to you and helped you resolve the issue of how to connect a TV to a laptop via HDMI.

In the era of high development digital technologies we can get the best from TV and computer through their connected connection. Creating that special connection between technical devices possible with DVI, HDMI or VGA connectors. But, often various reasons, these devices do not want to make contact with each other. You can always eliminate existing problems if you know what lies at the root of their occurrence. An approximate description of common problems will help you navigate a difficult situation and open up new ways to eliminate them.

What is HDMI?

HDMI is a multimedia interface that transmits video data high resolution and digital audio signals. This type of cable is widely used for connecting TVs, game consoles, stand-alone video players, as well as audio receivers to mobile devices and computer technology. If you want to play a video or show photos on a big screen, then you can’t do without such a device.

Manufacturers of modern multimedia equipment now add HDMI connectors to the standard equipment of devices by default. There are five main types of such ports, which are marked with Latin letters from A to D and differ in size. In addition, each type of HDMI cable differs from the other in functionality and scope of application.

It is also worth noting that recently the possibilities and advantages of a wireless connection when connected via HDMI adapters have been widely discussed. Outwardly, they resemble USB-Bluetooth and differ only in the connectors.

Connecting the TV

Watching movies, amateur videos and photos is much more convenient on a big screen, especially since almost all modern video cards allow you to connect to a TV. The picture quality and sound playback on a computer is significantly different from what you will see and hear if you connect a blue screen to it.

There are the following basic ways to connect a TV to a monitor:

  • connection via the VGA interface, which is equipped with almost all modern video cards;
  • connection via HDMI cable (this method is widely used for transmitting high definition signals);
  • connection via the DVI interface, which is universal for digital and analog monitors (originally designed for digital monitors that did not require conversion of incoming signals).

The connection can be realized without using various types wires A connection via WIFI allows you to quickly establish contact between the monitor and the screen, and in addition, frees your home from a web of cables.

Turn on devices

A TV can always be transformed into a powerful multimedia platform if correct sequence turn on all devices.

The connection algorithm is as follows:

The sequence of operations must not be changed under any circumstances. After connecting the devices, they need to be configured.

How to set up your display

The Windows 8 and 7 operating systems themselves detect the device and configure the connection if an HDMI cable is used. When using other connection methods, you need to know how to configure the image output to the display yourself.

The algorithm for displaying images on the display in windows 7 and 8 systems is as follows:

Setting up the display in the windowsXP operating system is always carried out in manual mode. You will have to press the buttons a little and switch the TV to AV mode.

Setting up the video card

After the connection is made correctly, a picture from the computer should appear on the TV screen. If the image does not appear, you need to adjust the inputs and outputs and adjust the resolution.

The video card is responsible for all visual effects and display of multimedia files on the computer. Each model has its own characteristics that should be taken into account when setting up.

But the general algorithm of actions will always remain unchanged:

Successful completion of the connection of two devices will be indicated by a system message about the use of an additional screen.

Outputting sound to TV

Playback of multimedia files will be complete only after setting up the sound card. If you don't do this, then you'll just end up in the silent film era.

Sound output to the TV is carried out via next plan:


If after making all the settings nothing plays, you need to pay attention to whether the video card even supports your sound output method.

What to do if the computer does not see the TV via HDMI?

Almost every modern TV model is equipped with an HDMI connector. Most video cards support multimedia output in this way. But if the computer does not see hdmi tv, you need to find out what is preventing the two devices from connecting.

Diagnosing problems includes the following steps:

  • step one: check the HDMI cable for serviceability and correct connection;
  • step two: check the system settings and working with a computer via an HDMI cable in the TV menu;
  • step three: reinstall the video card drivers.

Some types of TVs simply do not support an HDMI connection and you should not forget about this. It's about(mostly) about outdated models that are not equipped with a special connector. In such cases, you can try other connection methods. For example, via DVI or VGA.

Video: computer does not see TV

Possible reasons

The disease can be cured if you know the causes of its occurrence. Problems connecting your TV to your computer can be resolved if you know what caused them.

The main reasons why the computer does not see the TV:

  • the connection cable is damaged, incorrectly connected or defective;
  • the computer does not detect the TV;
  • the TV does not support the selected connection method;
  • video card drivers or lack thereof;
  • damage to interface ports;
  • the computer has a removable video card installed;
  • burning of internal parts of a TV or computer.

There can be many reasons for problems in the coordinated operation of two devices. If you are not a specialist, then you can confidently diagnose only external problems associated with the cable.

Solving the problem

Knowing the causes of the main violations in the symbiosis of a computer and TV, any problem can be eliminated.

Troubleshooting algorithm:

You shouldn’t try to fix problems on your own that only a professional can handle. But basic mechanical restorations are within the competence of any PC user. Do you really need to contact a technician to correct the position of the cable?

No signal from computer to TV

The absence of a signal most often indicates that this model There is no way to connect a TV via HDMI. It is possible that the connection type is incorrectly marked in the options. In this case, you should try other connection methods.


Photo: connecting a TV to a video card

The reason for the lack of signal on the TV may be viruses, outdated drivers for the video card, or cable failure. Be sure to check the video card settings and select the correct type of information display. Finally, look into the BIOS and check the activity of the connection elements.

Checking the signal through different connections

Through trial and error you can achieve the truth. If after all your efforts you are unable to resolve the connection problems, you can check the signal using different connection methods.

The due diligence process is as follows:

If the work done does not make any changes to the existing state of affairs, then, most likely, the reason for the lack of signal is some kind of internal breakdown or flaw in the cables and I/O ports.

The development of digital and multimedia technologies has given us the opportunity to enjoy viewing photographs, amateur and professional videos on a large screen TV. It is for this purpose that televisions are connected to phones and computers. The connection between two pieces of equipment, if done correctly, is established in as soon as possible.

But it happens that the image or sound is not reproduced on the TV screen. There can be many reasons for this. It is important to install them so that the problem can be eradicated in the future. Only a specialist can conduct a detailed diagnosis of problems and fix them. You shouldn’t undertake serious restoration work yourself. But this rule does not apply to the elimination of minor and primitive defects.

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The computer does not see the TV via HDMI: reasons and solutions

Today, almost any television panel can be connected to a personal computer or laptop. The equipment is connected via an HDMI connector. But often users encounter such a problem that the computer does not see the TV through HDMI input or no sound. There are several reasons why such problems occur, so it is necessary to identify the problem sequentially. Read also, which cable to choose to connect your TV.

Device connection methods

Connecting a computer or laptop to TV can occur in different ways:

  1. VGA or D-Sud cable. Almost all monitors, PCs and TVs have this connector. This is an analog connection and is not in the best possible way will convey all the nuances of video files.
  2. DVI. A more modern option. Can work with analog and digital devices. Has its own subclasses.
  3. S-Video. In addition, you will have to purchase an adapter.
  4. RCA or tulips. Connecting a laptop and TV using this method is rare.
  5. Scart. A popular method, since such a connector is found in modern TV models.
  6. HDMI cable. A good option to connect a computer.

The HDMI connector on your TV is usually located on the back or side. The computer almost immediately after connecting begins to see the other device, but problems may arise that there is no image or other errors. Moreover, this is the most proven and common way to connect a laptop to a TV. Read also, ways to connect Xbox to TV.

Common Causes of Connection Failure

If the TV does not see the laptop, but the connection is complete, then the reasons may be the following:

  1. The cable is not connected correctly or is defective.
  2. Monitor settings error.
  3. Incorrect operation of the laptop or PC video card.
  4. The settings on the TV itself or any other brand are not configured.

Let's look in more detail at why the TV does not see HDMI and the second device through it.

Equipment testing steps

  1. First of all, you need to check the quality of the wire connections and the condition of the connectors.
  2. Next, you need to check that the computer settings are correct.
  3. Then it checks for driver updates and video card settings.
  4. Run an antivirus program to scan for malware.
  5. Checking the port. It is recommended to connect to another device.

Read also, ways to connect a flash drive to a TV.

Cable check

If the TV connected to the PC suddenly stops working, and until that moment everything was set up properly, it means that the cable has come loose or has been broken. The first option is more common, since you can hook the adapter simply by passing by. But the second one is less common, since the optimal length of the HDMI cable is not so long as to lie on the floor and get under someone’s heavy foot.

In any case, if there is no picture, first check whether the connectors are fully inserted into both devices. And are there any foreign objects on the adapter itself? You can also try installing a different cable to make sure this error does not occur. Read also why the TV does not connect to Wi-Fi.

TV settings

When the TV does not see the laptop via HDMI immediately after connecting the equipment, most likely it is incorrect to select the signal source on the TV itself.

If there is no signal from the computer, then on the TV remote you should find the “input”, “source” or “Imput” button; it may be written “HDMI” right away on the LG TV. Go to the window that opens and there, in the list of active inputs, select the one you need. Confirm the action by clicking on “OK”.

If the equipment still does not connect after the operations performed, we carry out further diagnostics.

Read also how to watch videos from iPhone on TV.

Monitor settings

Having made sure that the signal from the TV is going along the right path, we move on to diagnosing the laptop or PC screen, or rather, to the settings. They can be carried out by any user with basic knowledge of their computer:

  1. Hover your mouse over any free space on the screen and click on the right button.
  2. In the list that appears, select “Screen resolution” or “Graphics characteristics” depending on the type of OS.
  3. Select the appropriate option for displaying the picture on TV. The device passport specifies the acceptable resolution, stick to it.

It's easier to do everything on a laptop. Press and hold the “Fm” and F4 buttons simultaneously until the optimal option is selected. After this, the laptop will connect to the TV correctly and the error that there is no image will go away.

Video card error

Another reason why the connection of devices does not work is the incorrect functioning of the PC video card. In this case, the laptop does not see the other device or does not display an image on it.

To fix this, you need to try installing the new drivers that are included in global network for each device model. Sometimes a complete reinstallation or replacement of an element may be necessary.

Read also how to adjust the sound on your TV via your computer.

The last thing that could be the reason that the TV does not receive an image via HDMI is a broken port. For diagnostics, check the functionality using other adapters. If the devices become visible, this is where the error lies.

Signal check

If all manipulations do not bring the desired result, it is recommended to check the signal using other connection options.

The check is performed as follows:

  1. Disconnect equipment from the network.
  2. Connect the HDMI cable to the computer and screen.
  3. Turn on the TV and press the “Source” button.
  4. In the column that appears, select the HDMI operating mode and click “OK”.
  5. Turn on the computer: when the OS boots, if everything is done, the TV screen and monitor will broadcast identical information.
  6. If the signal does not appear, then you need to go to the “Device Manager” to see if there are still available connectors for connection.

7. For example, if VGA is available, then you need to perform the same algorithm of actions, only set the appropriate mode in the settings.

If even after these steps the equipment does not start working, then most likely the problem is an internal failure.

Thus, the computer may not see the TV via an HDMI cable for various reasons, which can be diagnosed and fixed at home without special knowledge in area modern technology. Read also how to make a TV from a computer monitor.

TeleVopros.ru

Why doesn't the computer see the TV when connected via hdmi?

Today, any user can connect a laptop or desktop computer to a flat-screen LCD TV using an HDMI cable, and then enjoy an enhanced image. This connection is not always successful: for example, there may be no sound. But there are times when the computer does not see a TV connected via HDMI at all, although you just purchased the cable from a store where it was extensively tested. There are many reasons for cable malfunction, and searching the real problem must be done sequentially.

We carry out diagnostics

What should you do if the TV does not see the laptop via HDMI? Video cards of all modern products support this connection: HDMI on the TV is installed on almost every model. If the connection of the laptop was carried out according to all the rules, but there is still no image, then we connect the laptop to the TV, while sequentially checking all possible problems.

Cable check

Not a single product, even the most reliable brand, is immune from manufacturing defects, especially when assembled by hand. When purchasing, the image quality and sound are checked, but the specific connectors and connection sockets on the TV are never checked - in best case scenario make sure of their availability, and even then not all buyers. It often happens that the cable itself does not work, although it has not been used for such a long time. You need to connect the same cable, but to another device, if it functions normally, then the reason that the computer does not see the TV lies in the latter. It is necessary to diagnose the TV to recognize similar signals.

Checking the signal source

Press the button on the remote control to select the external input option. It depends on the specific model of the product which button on the TV remote control you need to press: “source”, “input” or “HDMI” (LG, Sony or Samsung). After pressing, a menu appears on the screen with a detailed list of active inputs. Select and confirm by pressing OK or Enter exactly the desired input into which you previously connected the cable coming from the laptop.


Working with the monitor

If the laptop does not see the TV when several monitors are connected simultaneously, then additional settings need to be made. These simple manipulations can be performed by every user without special education:

  • move the cursor to any free space on the desktop;
  • To display the menu, click on the right mouse button;
  • we find the “screen resolution” section - windows 7, and if it’s windowsXP, then “graphics characteristics”;
  • then you need to select an acceptable option to duplicate the screen.

Any laptop has a specific F4 key, if you press it together with the Fm button (located to the right of Crtl) repeatedly, you can select the desired option for the external screen - this is how the computer begins to see TV.

Video card and drivers

Open the “Device Manager” of your laptop to check the driver versions of the installed video card. Outdated software is the main reason why the TV cannot see the laptop. In this case, you need to go to the manufacturer’s website, where you can download new “firewood” - the video card will be updated, you will be able to establish the required connection.

Perhaps the fault lies in the fact that the operating system was infected with viruses or unauthorized penetration of malware occurred. Using a powerful antivirus program (computer protection program) capable of finding all spies of any level, carefully scan your computer and reconnect.

Some experts strongly advise checking the version for your Smart TV platform: sometimes a laptop does not connect using HDMI for this very reason. Update the Smart TV firmware and the problem may go away.

Connection port problem

Any connector may suffer mechanical damage or burn out during a power surge, which is not uncommon in our electrical networks. Experienced technicians advise connecting the HDMI cable when the devices are disconnected from the network; it is recommended to even disconnect the antenna cable at this time.

There is also a very rare reason why the TV does not see HDMI: it simply does not have additional power on the video card, and without this the connection will not work.

All details and connection options can be viewed using this video:

Troubleshooting algorithm

If you know the reason why there is no image on the TV screen, then eliminating various violations is already a solvable task. This is what the approximate procedure for eliminating detected faults looks like:

  1. Check the quality of the connection, visually check the external condition of each connector or connecting cables if the laptop no longer sees the TV.
  2. Then the setup of the computer systems is checked: check what choices were made in the menu items responsible for connecting devices.
  3. Check for updated video card drivers.
  4. In some cases, it won’t hurt to check the settings of the video card itself once again.
  5. Perform a smart scan of your entire computer again to ensure there is no malware.
  6. Visually check the condition of the multimedia ports and their proper operation - a positive result will be immediately visible when connected to another device, for example, a DVD player.

Signal check

If you have done everything possible, but there is still no signal from the laptop to the TV, try other types of connection. Use a rule of thumb where all existing methods connections. The due diligence process will look like this:

  • first we define available connections and the connectors that our chosen one uses Appliances;
  • disconnect the TV and laptop from the network;
  • connect the laptop to the TV using a proven HDMI cable;
  • turn on the TV, setting up its connection to the computer using the remote control;
  • We activate the laptop, if the signal passes, then a picture similar to the download should be displayed on the TV screen operating system;
  • no signal - go to the “Device Manager” section, find out what active connection types are available;

  • if it is possible to establish a connection via VGA, then you need to connect a similar cable to the products;
  • then we carry out the same actions as with HDMI, only press the “VGA” button on the remote control;
  • If you decide to make a connection via DVI, then connect the cable to the appropriate connectors, and select a similar option in the TV settings.

If the equipment does not start working together, the reason lies in an internal breakdown, which only a specialist can diagnose and fix. Of course, if you have knowledge of the electronic components of devices, you can try to repair the TV yourself.

Tehnika.expert

The TV does not see the computer via HDMI

HDMI is a popular connection connector various equipment between themselves (for example, a computer and a TV). But when connecting, various kinds of difficulties may arise - technical and/or software. Some of them can be solved on your own; to eliminate others, you may need to send the equipment in for repair or replace a faulty cable.

If you have a cable with any intermediate adapters, for example, you can use it to connect to a DVI connector. Instead, it is better to try using a regular HDMI cable operating in HDMI-HDMI mode, since the TV/monitor may not accept a cable that implies the ability to connect to several ports simultaneously. If the replacement does not help, then you will have to look for and eliminate another cause.

Check the HDMI ports on your computer/laptop and TV. Pay attention to these defects:

  • Broken and/or rusted, oxidized contacts. If any are found, the port will have to be replaced completely, because contacts are its most important component;
  • Presence of dust or other debris inside. Dust and debris can distort the signal, which will cause inconvenience when playing video and audio content (low or no sound, distorted or slow images);
  • Review how well the port is installed. If it begins to loosen at the slightest physical impact, then it will have to be fixed either independently or with the help of specialized service workers.

Perform a similar check on the HDMI cable, paying attention to the following points:


You need to understand that not all cables fit all HDMI connectors. The latter are divided into several main types, each of which has its own wire.

Read more: How to choose an HDMI cable

Method 1: Correct TV settings

Some TV models are unable to independently determine the signal source, especially if some other device was previously connected to the TV via HDMI. In this case, you will have to enter all the settings again. The instructions for this case may vary slightly depending on the TV model, but its standard version looks something like this:


For some TVs, the instructions may look slightly different. In the 2nd point, instead of the suggested options, enter the TV menu (the button with the corresponding inscription or logo) and select the HDMI connection option. If the TV has several connectors of this type, then do the rest in accordance with points 3 and 4.

If this method does not help, use the instructions for the TV (it should tell you how to connect via an HDMI cable to this particular device) or pay attention to other ways to solve the problem.

Method 2: Setting up your computer

Incorrect configuration of a computer/laptop with multiple screens is also the reason why an HDMI connection is ineffective. If no external displays other than a TV are connected to the computer, then this method can not be considered, since problems arise if another monitor or other device is connected to the PC or laptop using HDMI (sometimes other connectors, for example, VGA or DVI) .

Step-by-step instruction According to the settings for working with multiple screens for devices on Windows 7/8/8.1/10 it looks like this:


It is worth remembering that HDMI is capable of providing a single-stream connection, that is, correct operation with only one screen, so it is recommended to disconnect the unnecessary device (in in this example monitor) or select the display mode “Display desktop 1:2”. To begin with, you can see how the image will be broadcast to 2 devices simultaneously. If you are satisfied with the quality of the broadcast, then there is no need to change anything.

Method 3: update the drivers for the video card

Initially, it is recommended to find out the characteristics of your video card, since some graphics adapters are not capable of supporting image output on two displays at once. You can find out this aspect by looking at the documentation for your video card/computer/laptop or by using third-party software.

First, update the drivers for your adapter. You can do it like this:


You can also download and install drivers from the Internet, always from the manufacturer’s official website. It is enough to indicate the adapter model there in the appropriate section, download the necessary software file and install it following the instructions.

Method 4: clean your computer from viruses

Most often, problems with signal output from a computer to a TV via HDMI arise due to viruses, but if none of the above helped you and all cables and ports are working properly, then the possibility of a virus penetration cannot be ruled out.

To protect yourself, it is recommended to download and install any free or paid antivirus package and regularly use it to check your PC for dangerous programs. Let's look at how to run a PC scan for viruses using Kaspersky antivirus (it's paid, but there is a demo period for 30 days):


Problems with connecting a computer via HDMI to a TV rarely arise, and if they do occur, they can always be solved. Provided that your ports and/or cables are broken, you will have to replace them, otherwise you won’t be able to output anything.

We are glad that we were able to help you solve the problem.

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lumpics.ru

Why doesn't my TV see HDMI?

The topic of the conversation should rather have been called “How to connect a TV to a computer via HDMI.” Most of beginners do the procedure incorrectly, asking questions that are difficult for a professional to answer. Let us remind you: HDMI is a high-performance digital media content transmission interface. Images, music, other entertainment content. Will it be possible to listen to music on TV? It will be possible from a home theater, if you have one! The HDMI port was invented as a high-performance means of transmitting information. Let’s skip a few words, find out why the TV doesn’t see HDMI, and how to fix it.


Connecting a TV to a Computer HDMI

Correctly connecting the TV using HDMI

Home theater owners should know the truth - a digital media device has a playback source menu. The easiest way to illustrate the fact is with old stereo systems. Traditionally, devices had three blocks:

  1. Cassette decks: recording, playback.
  2. Radio broadcast reception.
  3. Laser discs.

Moreover, the blocks refused to play melodies simultaneously. It was necessary to switch sections using a special lever. Even a modern telephone is often equipped with an FM button... Can’t guess why the TV doesn’t see HDMI? Go ahead. The back of a TV typically contains half a dozen output jacks. Among the troops we will find a “tulip” formed by three petals, at times VGA puffs up, and certainly HDMI. Traditionally, the list is not limited to a meager list; see the instructions for more details. From the remote control, with the elusive press of a button (with only one HDMI port), you can select a source from the menu. The selection tool can be the Source key. You need to find a menu listing sources, select the cable connection port. There can be more than two HDMI connectors; it is important to track the correct number.

The computer usually avoids such tricks. There is no direct option to select the direction of signal transmission. However:


  • On laptops, the function keys Fn+F3 (F4) will open a pop-up system menu listing interesting options:
  1. Computer only. The image will not be sent to the external monitor (TV). Most people choose the named option. Don't be surprised that the TV can't see the laptop.
  2. Duplicate. The laptop screen will be duplicated by the TV. This is what most people need.
  3. Expand. Some people like to drag player and browser windows onto the TV, making it more convenient to watch movies. Let's be afraid to judge (tastes are individual), select the Expand option, lengthening the desktop.
  4. Projector only. The laptop screen turns off. The image will be displayed individually on the TV.
  • Desktop personal computers detect TV independently. Otherwise, take the trouble to visit the driver menu and select the required broadcast port.

It is easier to control a connected TV using the desktop context menu. First, right-click on the free space, select the Screen Resolution option. Successful TV detection makes the “Multiple Monitors” button available. You will see four options that are exactly the same as the laptop options. Read the values ​​above. It happens that the computer does not see the TV via HDMI: it makes sense to look here and look at the context menu. The monitors will be numbered; you can swap ports by simply clicking and selecting the object for changing system parameters.

There is no “Multiple Monitors” button in case of inconsistency: the system does not see the TV. Both devices must be turned on (230 volt power supply).

We connect the TV and computer with a cable

Pros say: it is possible to hot-connect a TV and computer via HDMI. Avoid risking expensive equipment; perform procedures in the absence of power. The first thing you need to do is turn on the TV. In normal mode, devices see each other. Problems mean there is a breakdown. Is hot plugging possible or not?