The computer does not see the TV card. Why can't my computer see my TV via HDMI? Setting image output via HDMI

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

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

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:

The cable is not connected correctly or is defective.
Monitor settings error.
Incorrect operation of the laptop or PC video card.
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

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

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.

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.

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:

Hover your mouse over any free space on the screen and click on the right button.
In the list that appears, select “Screen resolution” or “Graphics characteristics” depending on the type of OS.
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 new drivers that are available on the global network for each device model. Sometimes a complete reinstallation or replacement of an element may be necessary.

Having decided to take a break from everyday worries, you connect a player to the TV to watch your favorite movie or a set-top box to play a long-awaited project. But your plans are ruined by the unpleasant fact that after you have completed all the requirements, the TV menu simply does not display the newly connected device. And if you are using working equipment, a reliable signal source and a new cable, then the question arises: why doesn’t the TV see HDMI? There can be any number of reasons for this problem, so we will consider each of them in detail.

Check cable functionality

In the modern world, nothing is perfect, so even a new thing may not meet the required quality standards. Even HDMI cables from manufacturers in the premium segment of the market are not immune to such problems as manufacturing defects. In addition, the cable may become unusable due to improper storage, careless transportation, or operation that contradicts the requirements.

Another reason for the lack of a signal may be that when outputting a picture from the computer, the user did not take care of additional power to the video card. Some graphics adapters are equipped with 6-pin or 8-pin connectors, to which cables from the power supply are connected. If most of the time the card does not operate at maximum power, then the lack of additional power will not interfere with comfortable use. However, it is enough to increase the load on the adapter, and it will no longer be able to cope with its task without increasing power consumption.

Check the computer's operating mode with an external monitor

If you are the only monitor, then it should be detected automatically. But when using this device as a second or third display, additional configuration may be required. For example, in Windows operating systems, the easiest way to do this operation is by pressing the “Win + P” combination or the “Fn” button and the corresponding key for selecting the projection method on a number of function keys. As a result, a window or list will open in front of you, allowing you to choose one of the ways to display the image:

Only on the computer screen.
On PC and TV (duplication).
For computer and TV (extension).
Only on the TV display.

With the first and fourth options, everything is clear: displaying the image on a PC or TV, respectively. The second item allows you to display on your TV the same image that you currently see on your computer. This feature is useful when you give presentations to students or colleagues, or perform similar tasks. Through the extension, in turn, you can get an additional screen to display information on it, which will allow you to simultaneously view more information and process several documents.

The extension is also useful if your TV is not equipped with Wi-Fi, but you want to immediately display a movie or cartoon for children. Since HDMI also supports audio, you can work comfortably on your computer while your loved ones enjoy a movie. However, you need to understand that when outputting audio to a TV, you will not be able to listen to music or watch videos on your computer.

Make sure you have the latest drivers

Even if you recently updated your video card driver, it is still worth checking whether the manufacturer of the graphics processor and system logic has released an update. As with cables, no one is immune from errors in this case, so the version of the driver installed on your computer may contain problems that have already been fixed in the update. The same applies to the Smart TV system on the TV, updating which can also help connect a PC or other device via HDMI.

Make sure the outputs are working

The problem of non-functioning connectors can be relevant not only for TVs, but also for laptops and computers. In order to check whether the outputs of the device connected to the TV are functioning, you need to carry out exactly the same procedures as described above. You can also try to connect another device to the TV through the same port. If you connect a PC and TV, check whether the output is selected correctly. Users often make the mistake of connecting the HDMI cable not to the connectors on the graphics adapter, but to the outputs on the motherboard.

Set the conditions for enabling sleep mode

If you use a laptop to display an image on a TV, then when you close its lid, the image automatically switches to the “TV display only” display mode, which will allow you not to worry about the need to manually switch.

However, many laptops have a feature that automatically enters sleep mode when the lid is closed and exits it when it is opened. If your system uses exactly these settings, then they need to be changed, prohibiting the computer from “going to sleep”.

Conclusion

Very often, the cause of many problems with technology lies on the surface. Simple inattention when choosing an input, the use of a low-quality Chinese cable and other factors may be the reason why the TV does not see HDMI. Using the above recommendations, you can easily find the cause of the problem and can easily fix it.

In the modern world of high digital technologies, there is often a need to connect a TV to a computer using VGA or HDMI connectors, but often, for various reasons, these devices do not want to see each other and, accordingly, do not work. Let's look at the most common causes of such problems:

The cable used to connect the TV is broken or damaged. This can happen both with a previously used cable and with a new one; do not forget about the likelihood of a manufacturing defect. The simplest solution is to replace the connecting cable.
The cable is definitely working, but the TV does not work with the computer, and the computer does not detect the TV. It is possible that the option to work with a computer via a VGA or HDMI connection is not configured in the TV menu. The computer may have problems with the video card drivers; when the drivers are missing or unstable, the operating system may not respond to external video devices. There may be viruses on your computer, some of which block various methods of connecting external devices.
A TV connected to a computer gives some signs that it is connected to a device, the computer also reacts in a similar way, but the devices still do not work together. The reason may again be video card drivers or their absence. In this case, you should check for the latest drivers for your video card. Also, the computer may not be configured to work with an external monitor. This function can be enabled in the settings of your video card.
The TV and computer worked fine for a long time, but at some point they stopped cooperating adequately. In this case, there may be different options for operation, for example, both the computer and the TV are detected, but do not work; only one of the devices detects the other; neither device detects the other. There are several reasons for this situation:
- broken connecting cable;
- damage to interface ports on a computer or TV;
- burning of internal parts of a computer or TV (capacitors, diodes, bridges, etc.), with such a breakdown, the image transmission function may partially work, that is, the devices see each other, but do not work effectively. The real reason is a lack of power or loss of part of the engineering circuit.
Everything is working: TV, computer and connecting cord, but there is still no picture. It is possible that the computer has a removable video card installed, which requires additional power, which for some reason was not connected when the computer was assembled. It becomes clear that working with an external device requires additional power, and the video card is not capable of operating at full capacity.

An approximate description of common problems will allow you to navigate the current situation and try various options for eliminating it. However, if you are not an expert in electronics, it is recommended to limit yourself to testing the HDMI or VGA connecting cable. If this operation does not help, it is best to call professional TV technicians from the TV Service Center company, who can quickly determine any cause of the malfunction (from viruses on the computer to thin soldering of microcircuits) and fix it right at your home.

How to connect a laptop to a TV via HDMI? I have an inexpensive Samsung LCD TV with two HDMI inputs, and I also have a laptop with an HDMI output. Can I do it without any special knowledge? connect laptop to TV via HDMI cable(which came with the TV) and use your TV as a monitor. The fact is that my anniversary is coming soon, relatives and friends will come. I have all my family photos and home videos on my laptop. I would like to show all this to the guests on TV, and not huddle around the laptop, ours is small, 15 inches diagonal. And a lot of guests will come, what will you see there on the laptop. And my daughter watches cartoons on her laptop, although it’s more convenient to watch them on TV. Anton.

How to connect a laptop to a TV via HDMI

Friends, I assure you, nothing is easier. Almost all of us have TVs and laptops that we don't use 100 percent of their capabilities. Every modern laptop and every modern video card has an HDMI output, which was invented in order to transmit high-resolution digital video data and multi-channel audio without loss of quality. Transfer where? For example, on a modern TV that supports the HDMI standard! This means that using an HDMI interface cable we can connect a TV and a laptop. The image present on the laptop will also be displayed on the TV. The picture on the TV will be as clear and beautiful as on the laptop, and the sound will be multi-channel and rich. That is, there will be no distortion of video data and sound.

By the way, we have other articles on this topic:
. Or how to watch a video on a laptop on a TV
, in it you will learn what to do if, after such a connection, there is no sound or image on your TV, or the screen resolution is set to the wrong one!

Now I will tell you one interesting story. Just recently, one of my friends invited me and my wife to his birthday party. He is an interesting person, he is into tourism, travels a lot and goes on business trips abroad, and has a lot of interesting photographs. A lot of relatives and his friends gathered for the holiday he organized. Many came from far away and had not seen my friend for many years.

At some point during the celebration, all the guests decided to look at my friend’s huge collection of photos and videos on the laptop. Previously, we looked at all the photos in dusty albums, but now progress is being made, we use a computer for these purposes. So, at some point I realized that twenty people simply wouldn’t fit around a laptop, but everyone wanted to see the photo collection. And then I examined the TV in the large room. The TV was not particularly new, a Samsung 4 series (LED type), it had two HDMI inputs, which was what we needed, and the laptop, as expected, had one HDMI output. It was possible to connect the laptop to the TV via an HDMI cable, which I found in the box from the TV; my friend did not take this box to the trash only because the TV was not out of warranty - three years.

If you have a Samsung TV, then when you buy it, it must come with an original HDMI cable, take care of it, what they sell in stores is sometimes not of the best quality.
So, let's go. We connect the laptop and TV with an HDMI cable. The laptop and TV must be turned off. On the back of the TV there are two HDMI connectors,

Take an HDMI cable

And we connect it, for example, to the HDMI 2 connector,

We connect the other end of the cable to the HDMI connector of the laptop.

We turn on the laptop and TV, the operating system starts, but nothing on the TV. Only the message "Weak signal or no signal"

guests wait tensely and think: “Well, they didn’t let me see the photos on the laptop and it won’t work on TV.”
On Samsung TVs, to display a list of all available video sources, press the Source button on the remote control.

Are you interested in how to connect a laptop to a TV via HDMI? Then you've come to the right place.

Many laptop owners lack the diagonal size of their “native monitor”. While 15 inches is more than enough for constant work, it won’t be enough for good games or movies.

To enjoy the gameplay or watching a movie to the fullest, you can use it instead of the standard screen.

Most equipment manufactured after 2003 has built-in HDMI connectors.

That is, if you have a special cable, connecting a laptop or desktop computer to the TV will not be difficult.

Connection is possible even if the TV does not have an HDMI connector. In this case, VGA adapters will also work.

Tools

To do this you will need:

Availability of an HDMI socket on the TV;
Netbook, laptop, system unit with the same socket;
Actually, an HDMI cable. You can buy it in computer stores for relatively little money. It looks something like this:

Note:On some video cards and not the newest ones,HDMI outputs are not provided. Anyway, there isVGA interfaces, so connection is possible. True, throughVGA does not transmit an audio signal, but if you have a separate sound system (speakers, for example), this is not a problem.

It is possible to connect HDMI to VGA, but this will require a special signal converter. More on this later. For now, let's take a closer look at the direct HDMI-HDMI connection.

Connection process

That's all with the mechanical part of the connection. Next, it's a matter of making the right settings.

Step 2. Setting up signal transmission and reception

The correct settings will have to be installed both on the TV and on the laptop. Let's start with the first one.

To do this, on the remote control you need to press the button responsible for setting up the signal sources (most often it is called “input” and is indicated by an arrow pointing inside the square):

In the menu that appears on the screen, you need to select the appropriate signal source, in this case HDMI.

As a result of these simple manipulations we have this:

In general, at this stage, connecting the laptop to the TV can be completed. But for the convenience of working in this mode, it is better to select the appropriate settings on your computer.

Setting up work with an additional screen

Settings for working with an additional screen can be made in two ways: using the Windows Mobility Center and using the desktop settings.

Let's look at each of them in more detail.

Step 1. Windows Mobility Center

It can be opened from the Control Panel or by pressing "Win" + "X". As a result, the corresponding service window will open:

Clicking the "Turn off screen" button in the "External display" segment will bring up another small menu:

The work options are obvious, but just in case, let’s consider each in more detail.

When the “Computer Only” tile is active, the image will not appear on the secondary screen;
When Duplicate mode is enabled, it will show the same image on both devices;
When the “Expand” mode is active, the space of the screens will be combined. That is, the cursor will move from the edge of one screen to the other as if they were one monitor;
Accordingly, if you select “Projector Only”, the image will be played back only on the TV.

Step 2. Desktop Settings

You can open this settings window by right-clicking on the desktop. In the drop-down menu, select "Screen resolution"

Here you can define both the interaction mode of the screens and the resolution of each of them. The dedicated menu has the same capabilities as the previous option.

Alternative connection options

HDMI is not the only way to connect a laptop and TV. If there are a few more alternatives:

Interface. The image quality with such a connection is an order of magnitude lower, but when there are no other options, there is nothing to do. In addition, the VGA interface does not transmit an audio signal, only video. Separately, you will have to take care of setting up the sound;
If your TV only has a VGA connector, you can connect to it using the HDMI connector on your laptop. This will require a special converter, purchased separately;
Wireless connection. Laptops with Core i3 and higher processors are equipped with a wireless connection system to TVs. True, this only works with the latest models of multifunctional TVs. In addition, after reinstalling the OS, the necessary drivers may not remain.

With the above information, establishing a connection between two devices will no longer be a problem.

How to connect a laptop to a TV via HDMI

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