The topic of the conversation should rather have been called “How to connect a TV to a computer via HDMI.” Most beginners do the procedure incorrectly, asking questions that are difficult for a professional to answer. Let us remind you: HDMI is recognized as a high-performance digital interface for transmitting media content. Images, music, other entertainment content. It will be possible to listen to music from a TV or home theater. The HDMI port was invented as a high-performance means of transmitting information. Let's 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:
- Cassette decks: recording, playback.
- Radio broadcast reception.
- 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, sometimes 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:
- 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.
- Duplicate. The laptop screen will be duplicated by the TV. This is what most people need.
- 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.
- 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 change object 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?
Here is the Wikipedia page http://en.wikipedia.org/wiki/HDMI, in the characteristics of the standard there is the phrase Hot Pluggable: Yes. Translating into Russian, we see the docking of the connectors with the power on. Want to play it safe? Russia is a place where dealers and manufacturers comply with regulations selectively. It's a pity for the equipment - play it safe.
Which end should you start connecting the cable to? No difference.
Sound. Connecting a TV to a Computer HDMI
Since its creation by the committee (2002), the HDMI interface has been conceived as a combined solution for transmitting image and sound. See the available audio formats individually (Wikipedia page), we only note that in Windows you need to select the sound source. Now the TV is considered a system device, so these responsibilities can be assigned to it. To do this, it’s easier to click the lower right corner of the desktop (speaker icon) with the right mouse button, select context menu Playback devices. If there is no icon in the lower right corner, you need to click the arrow to the right of the language selection symbol RU (EN), to the left of the clock. There will be a symbol there.
After clicking, a window will open: playback devices will be listed. You will need to turn off everything except the TV, and, on the contrary, turn on the TV. In 90% of cases, after a couple of seconds the native speakers of the plasma panel will sound. Do we want Sound Around? Similar acoustic system comes with home theater. Look through the device description. There are a number of ways to transfer sound from a TV to a home theater; any will do, taking into account the condition of the need to purchase the required cable. Similarly, using the Source button on the home theater control panel, select the desired sound source.
On the TV side, the procedure is often transparent, and the device’s own speakers are turned off. Then don't worry if the movie soundtrack is recorded in mono. Every self-respecting home theater has a splitter inside that easily splits the sound into channels of the Sound Around format.
FAQ: Connecting a TV to a Computer HDMI
- The TV does not see the HDMI cable. What to do?
We would venture a guess: the TV playback source is incorrectly specified. Check that the computer's Target signal is correct. For TV, use the remote control. Using the menu or the Source or Hdmi keys, ensure that the source exactly matches the socket where the wire is inserted. For example, if this is HDMI 3, then you need to put HDMI 3 in the menu. From the laptop side, use the function key Fn+F3 or F4 (on different models differently) select the Duplicate mode.
PC connection
Get comfortable first, then change as you see fit. A similar action is performed on a desktop computer, through the desktop context menu (the “Change resolution” column), both devices must be turned on.
- Through hdmi cable There is no sound on the TV, but there is a picture, what should I do?
The audio stream output device is set incorrectly personal computer. Click the speaker icon (bottom right of the screen). Fix the problem by clicking Playback Devices. In the window that opens, turn off playback devices, excluding TV speakers. If necessary, also make the instance active (the line will turn green).
- The TV stopped seeing HDMI.
We would venture to guess that the breakdown was preceded by a change of equipment. A new video card has been installed. Seeing this outcome, the TV could reset its settings. Start over. The guidelines are provided above. Check the signal source and destination. Any parameters related to sound, image.
- The laptop does not see the TV via HDMI.
You need to choose the right TV signal output source. Switched on devices must see each other. There is information that the cables different versions standards are incompatible with the equipment. If v1.3 was present, the equipment worked; replacing v1.4 caused the picture to disappear. Sometimes setting up a video card requires adding a second monitor manually. Relevant for desktop computers.
You see: there are few reasons (the TV does not see HDMI). Mainly setting up equipment. Experts recommend putting new firmware TV, then turn off the device, pause 5 minutes. It is permissible to reboot the product manually (the menu will help), for each model the exact sequence of actions is different: LG, Sony, Samsung - the device demonstrates its features. Proceed according to the instructions. Farewell advice. Be sure to try the TV ports one by one, changing the image source through the menu. There were cases where out of four HDMI sockets, the only one that worked, for example, the fourth one. If we watch films, it makes no difference, number 1, 2, 3...
Readers should understand: operating room Windows system imperfect. To make the equipment work, you have to reboot the devices several times. It happens that pros ask why digital technology failed? The master shrugs his shoulders, says Windows - Must Die, Linux - well done. It’s difficult to say what the phrase means, but for some reason the difficulties on the forums relate specifically to paid operating system, not freely distributed. We see no point in discussing further.
Synchronizing your TV and computer allows you to significantly expand functionality technology. The user will be able to play video games on the big screen, watch movies, TV series and TV shows. There are several connection methods, but HDMI remains the priority option. In some situations, the computer cannot see the TV via HDMI. What causes this problem? There are several options. Now we will consider each of them, and also provide useful recommendations to restore connection.
The abbreviation HDMI stands for High Definition Multimedia Interface. This is a modern connector that simultaneously transmits audio and video. Almost all equipment is equipped with this interface. “Tulip” and other cables that were popular in the past are designed to transmit an analog signal. The HDMI cable broadcasts digital content with Full HD or 4K resolution (depending on version).
Therefore, if you need to connect a computer to the TV screen, then it is best to use this interface. The connector provides data transfer to highest quality and with minimal delay. Unlike other wires, HDMI simultaneously transmits sound and video to the TV.
The HDMI interface was introduced back in 2002. Since then, the developers have released many different modifications. They gradually increase throughput cord. The developers try to timely add support for popular formats and many other useful features.
HDMI versions older than 1.4 support Internet signal transmission, 3D and 4K resolution. Internet connection via HDMI is different from wireless technology Wi-Fi increased data transfer speed, as well as a more stable and reliable signal. The most popular HDMI form factors are:
- type A – classic version;
- type C – mini HDMI;
- Type D – micro HDMI.
The last two types are designed to connect mobile phones, cameras and others portable devices. What causes wire breakdowns? Mostly short circuits and mechanical damage.
Causes of problems and their elimination
Why can't my computer or laptop see the TV? There are several reasons. Let's list the most popular:
- equipment is connected incorrectly;
- HDMI cable is damaged;
- the interface on the PC, laptop or TV is faulty;
- problems with video card drivers;
- incorrect monitor settings;
- The settings on the TV are incorrect;
- The GPU processor of your computer or laptop has failed.
Now we will study in detail why connecting a computer to a TV does not work. Main stages of equipment diagnostics:
- Assessing the correctness of the connection diagram and visually inspecting the integrity of the wires.
- Checking your computer and TV settings.
- Testing the computer operating system for viruses.
- Diagnostics of port performance by connecting to other devices.
- Checking for updates for the video card driver.
Now let's take a closer look at why the TV doesn't find a PC or laptop. We will offer useful troubleshooting tips.
Broken cable
In situations where the image was broadcast correctly from a laptop connected to the TV, and then the synchronization stopped, you need to start by checking the integrity of the cable. The plug may have come loose or the wire may have been broken. Mostly problems arise precisely because the plug comes off. This could even happen due to the fact that the user simply passed by. Mechanical damage to the cord is less common. Cables come in different lengths. Therefore, users have the opportunity to choose the best option for themselves. This eliminates interruptions.
If the laptop is connected to the TV and there is still no picture, then first check that the plugs are inserted correctly into the connectors. If the TV does not see from the TV, try a different cord. It cannot be ruled out that connection failures occurred as a result of wire damage.
TV is not configured
Some TV models do not have an option to automatically detect the signal source. Especially if you have previously configured TV synchronization with other devices. In situations where, when connected via HDMI, the TV does not see the laptop or computer, take the remote control remote control, and then select a list of available signal sources. From the proposed list you need to select “HDMI”.
If the signal detection when connecting the cable did not occur automatically, then you need to do all the work manually. Step-by-step algorithm of actions:
Many modern TV remote controls have a button "HDMI". This means that you can ignore the second point of this instruction. Just press this key. As a result, a switch to this signal source will occur. Pre-select the desired port. How to do this is described in the third and fourth paragraphs of the instructions.
If any difficulties arise in the process of selecting a signal source, carefully study the instructions that came with the TV. It describes in detail the process of connecting additional devices using the HDMI connector.
Incorrect monitor settings
If there are no problems with signal transmission, then you need to diagnose the settings of your laptop or computer. Very often, the computer does not see the TV via HDMI precisely because of incorrect system parameters. No special knowledge is required for this. You just need to follow these simple instructions:
- Hover your mouse over an empty space on the screen, and then right-click.
- In the context menu that appears, select "Screen resolution". Sometimes this point is called "Graphic characteristics". It all depends on the version of the operating system.
- Select the best way displaying images on a large TV screen. Stick to the resolution as stated in technical specifications TV.
The settings panel is much easier to turn on on a laptop. Press the key combination Fn+F4. Hold this combination for now optimal resolution will not be detected automatically. As soon as the laptop or PC goes into sleep mode, the image will go out. Therefore, it is better to disable automatic sleep in order to establish an uninterrupted connection with the TV.
Video card problem
A broken video card is another common reason why the TV can no longer see a laptop or PC. An inscription appeared on the screen « » , what to do in such situations? To fix the problem, you need to update the drivers. Finding them on the Internet will not be difficult. You can download the update package from the official website of the GPU processor manufacturer.
You need to start by studying the technical parameters of the video card. The fact is that not all graphics modules support the option of displaying images on multiple monitors. Acquainted with similar characteristics can be found in the documentation that comes with the video card. If all documents have been lost, then you can use special software.
To update GPU adapter drivers, follow the step-by-step instructions:
As noted earlier, drivers can also be downloaded yourself. You should not download files from unverified sources. Download updates exclusively from the official portal of the video card manufacturer. Installation is carried out through an automated installer. Therefore, there should be no problems.
Connection port not working
Absolutely all connectors are susceptible mechanical damage, and short circuits, as a result of which contacts burn out. Therefore, carelessness by the user or a sudden surge in voltage can also lead to the computer not seeing the TV. Experienced specialists strongly advise connecting the HDMI cable only if all equipment is de-energized.
Over time, the HDMI output pad on your computer oxidizes. Because of this, the device does not detect the connection. Contact service center, so that qualified engineers can resolder the damaged contacts, thereby restoring the functionality of the connector.
In some situations, connection problems arise due to the fact that the video card is not equipped with additional source nutrition. Therefore no synchronization takes place. For a regular user It will be extremely difficult to check the functionality of the connection. It is extremely important to first analyze the features of the graphics adapter.
Viruses on your computer
Sometimes the laptop does not see the TV via HDMI due to viruses or malware. This problem occurs extremely rarely, but this cause cannot be completely ruled out.
To increase the level of security of your PC or laptop, download an antivirus. There is absolutely no need to buy a license. At first you can get by free version, the validity of which is limited in time - on average about 30 days. As an example, let's look at the process of launching a scan using Kaspersky Anti-Virus:
- Activate the program, and then run the scan command by clicking on the corresponding icon.
- Select scan type – "Full check", and then click on the button "Run scan".
- A comprehensive scan of the operating system for viruses can last about 2-3 hours. If the antivirus finds malicious applications or infected files, this will be written about in the scan report.
Difficulties in the process of setting up a connection between a PC and a TV via HDMI arise extremely rarely, but if problems arise, they can be solved with your own efforts. The exception is if the ports fail. It will not be possible to replace the HDMI interface or re-solder the pad without professional equipment.
Note.
Many users are perplexed: why the TV does not see the HDMI connection if the cable is new, the signal source is working, and the devices were switched according to the instructions. There may be several reasons for this state of affairs, so the problem should be searched for sequentially. We assume in advance that you are using an HDMI-HDMI cable without any intermediate adapters.
1. Check that the HDMI cable is working properly. Even very expensive brands are not immune from such a thing as manufacturing defects. In addition, due to careless use, the cable may be damaged. You can check the HDMI cable by replacing it with a guaranteed working analogue or by connecting it to other devices.
2. Check if you have selected the correct input source in the TV menu. To do this, press the external input selection button on your TV's remote control. Depending on the TV model, this may be a Source button, Input button, or just HDMI. When you click on it, a menu will appear with a list of available inputs. Select and confirm by pressing the Enter (OK) button the input into which you connected the HDMI cable.
3. Check whether the mode for working with an external monitor (in this case, a TV) is selected on your computer. If your TV is the only monitor connected to your computer, it should be detected automatically. In other cases, for example, a TV and a display are connected at the same time, additional settings must be made.
On the desktop, you will need to right-click on a free field of the desktop, then go to the “Screen Resolution” (for Win7) or “Graphics Characteristics” (WinXP) menu and select the screen duplication option. For laptops, there is a special function button at the top of the keyboard with an image of the monitor icon (usually F4). By pressing it several times simultaneously with the Fn button (for example, Fn + F4), we select the appropriate option for using the external TV screen.
4. Make sure that the latest versions of drivers for your video card are installed on your computer. In the computer's Device Manager, determine the version of the video card driver you are using. On the official website of the video card manufacturer, find the latest versions of drivers and, if necessary, download and install them on your computer. Sometimes HDMI connection problems occur due to using outdated version Smart TV operating platform.
5. Check your computer's operating system to see if it is infected with viruses or malware. You should check your computer for any effective antivirus program with fresh signatures.
6. Check that the HDMI ports on your TV and external signal source are working properly. Connectors may burn out or become mechanically damaged due to repeated cable misuse. Although the HDMI standard allows for “hot” plugging of the cable, experienced specialists recommend that at the time of switching not only turn off both devices from the sockets, but also disconnect antenna cable from the TV socket.
Another rather exotic reason why the TV cannot see the computer via an HDMI connection is the lack of additional power on the discrete video card used in it, and working with an external device requires increased energy costs.
If the materials in this article did not help you solve your question, ask it on our forum.
We have prepared detailed instructions for users who are wondering why HDMI does not work on a laptop. Use several solutions below to resolve the issue.
Please note that HDMI does not work on a laptop mainly due to faulty drivers or settings. However, you should make sure that the problem is not with the HDMI port or cable.
Before performing the following steps, try simply unplugging the cable from your TV or projector and plugging it back into the HDMI port.
Also check the connection to another HDMI cable as this may be the problem. If HDMI is still not working on the laptop, then use the following solutions.
Solution 1: Check your display output settings
1. Click Start and click the Settings icon in the lower left corner.
3. Select Screen from the menu on the left and check if your TV is installed as a second monitor.
If the TV is not detected, follow these steps:
1. Simultaneously press Win + P (key with Windows logo and P key).
2. Select Recurring from the pop-up menu on the right side.
3. If "Recurring" doesn't work, try switching to "Expand".
After this, you will see the TV in the display output settings.
Solution 2: Update your display drivers
The problem with why HDMI does not work on a laptop may be video Windows drivers. You can go to Device Manager to check the status of your display drivers. In the "Video Adapters" category you will see the Microsoft Basic Display Adapter, Intel HD Graphics, Nvidia GeForce or others, depending on the video card used on the laptop.
Follow these steps to update your video drivers using Device Manager.
1. Right-click the display device name and select Update Drivers.
2. Select " Automatic search» for update software. Windows will automatically search for and install a new driver.
Please note: Windows does not always provide the latest drivers. In this case, you will have to download new drivers manually.
You can download and install drivers from the manufacturer's official website. find out exact model your laptop, operating system version, then go to the video card manufacturer’s website and download video drivers to your computer.
Ready! Two solutions to the problem of why HDMI does not work on a laptop. If you have any questions, write in the comments below.
The HDMI connector has become increasingly popular in recent years because, unlike other ports, it has the ability to transmit audio. Absolutely all laptops are equipped with such a connector, thanks to it you can easily connect to a TV and display images on a large screen. Let's look at what you can do if HDMI on your laptop doesn't work, depending on the situation.
What should you do first?
First, you need to determine what caused the problem, since how to solve it may vary depending on the situation.
A common phenomenon is that HDMI does not work on a Windows laptop, that is, after the connection has been made, you only see an empty desktop on the screen. Here the problem lies not in the connector or cable. The fact is that the TV here acts as an extension of the laptop screen, i.e. it becomes an additional desktop area. To see the window in this situation, it will be enough to simply move it left or right.
For correct operation This is not enough, so you need to switch the display to full desktop duplication mode. To do this, proceed as follows:
If the HDMI output on your laptop does not work, this method will help fix the problem.
The laptop sees the connection, but there is no image on the TV display. First of all, you need to check the connection. The wire should sit firmly; carefully inspect it for damage and kinks. If they are present, the cable will have to be replaced.
If everything is absolutely fine with the cable, there is no damage, then you need to check whether the correct socket was selected. Often TVs have several ports at the same time, but signal reception in the settings is set to only one port.
Everything is fine with the picture, but there is no sound. In this situation, your task is to route the audio signal correctly. To do this we do the following:
If HDMI on your laptop stops working, and all of the above steps did not help, then you should check whether the port itself is in working condition. Sometimes they burn out - naturally, you will have to take the laptop to a service center. To avoid such a problem, be sure to disconnect the cable cable from the TV before connecting, as well as satellite dish. If the outlet that supplies power is not grounded, disconnect power from all devices before connecting.
It is worth noting that troubles of this kind can appear both with the TV port and with the laptop connector. To find out exactly where the problem lies, connect another gadget using HDMI. If problems are found with one of the devices, it is best to seek help from professionals.
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