Why is there no image on a TV from a computer through an HDMI cable (laptop)
In some cases, after connecting the TV to the computer, or a laptop via HDMI cable, the image simply does not appear on the TV. Rarely, but it happens that there is a sound according to HDMI, but there is no image on the TV. Although, it seems to me that most often they are faced with the reverse problem when there is an image, but no sound by HDMI.
In this article, we will try to figure out exclusively the problem of the image of the image by HDMI cable. It seems to be simple there, connected a TV with a computer, chose the desired entrance on the TV, and if necessary, then on the computer we also choose the necessary mode of output of the picture. And in theory, everything should already work. Instead we see the inscription “no signal” on the TV.
Before moving on to some tips, watch the instructions for connecting the TV with the computer by HDMI:
If you do everything according to the instructions, but there is no result, and the image on the TV never appeared, now we will understand.
The procedure for connecting a television receiver to a PC or laptop through an integration
- We connect the HDMI cord to your laptop or computer. If you have a laptop, the connectors are on the side panel. If a computer, look for in the back of the system unit.
- The other end of the cable is inserted into the connector, which is located in the rear of the TV.
- On the remote control from the TV, click the button that is responsible for the choice of the source of the signal displayed on the screen.
Correct correction is carried out by checking all the reasons that could potentially affect the occurrence of the problem. Since the frequency of manifestation of certain factors can be different, it is first recommended to consider the most common of them. So you will save time in the process of eliminating problems.
Important. First of all, check the condition of the HDMI cable and all the ports participating in the connection. Only after that it makes sense to proceed with the correction of software errors associated with setting up the connection of TV and PC.
Setting a computer or TV
We will throw aside the possible problems of the video card and the potential impact of viruses to focus on setting up equipment. As practice shows, users often make errors at this stage, in connection with which the TV does not connect to PC. Rather, on the TV screen, the computer integration is not displayed.
We will check the correctness of the settings both on PC and on TV. By connecting the computer to the TV, do the following:
So, in the case of the TV, the main setting is the right choice of the port. If there is no signal or any other error message on the screen, it makes sense to analyze the PC settings:
- In the displays manager opened, you need to make sure that the computer has discovered the TV.
- Next, select the type of display of the second screen and click on the “Apply” button.
As a rule, users select the type of display “duplicate”, within which the image from the monitor screen is copied on TV. But if necessary, you can dwell on any other mode.
Classification from malicious programs
If the inscription “No signal” is saved, although the cable is working, and the settings are set correctly, you should proceed to consider the next reason for the problem. In particular, there is a possibility that an error appears due to impact of viruses.
Install an advanced antivirus on the computer like Kaspersky Internet Security or Avast, then start a deep computer check. If you do not have the opportunity to use paid software, you should contact the built.In Windows Defender. He is also able to perform the check, revealing, ultimately, the virus and eliminating it.
Updating the drivers
The absence of viruses makes you think about checking equipment. It is possible that problems are associated with outdated video card drivers. They must be updated:
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Advice. If the standard ways to update the drivers will not work, try installing the update manually by downloading the distribution from the official website of the video card manufacturer.
Please note that there can be two video adapter on a laptop or desktop computer. Each of them needs to be updated. After that, you must again check the correct connection settings. Most likely, the problem will no longer make itself felt.
The TV also needs to be configured, since by default it transmits an analog or digital signal. A simple manipulation is carried out here, namely, with the help of the remote control, the signal source is selected and changes. To do this, a separate button opens a list of sources and HDMI is selected. The signal selection key can be called “Sources”, or “Input”, or not have a signature, but in any case, it depicts an arrow in a rectangle.
If a special button is not provided on the remote control, you will need to go to the menu and select the “Signal Source” option. Either an active source or mode by the port number is selected, to which the cable is connected.
If all operations are performed correctly, a translated picture with PC will appear on the screen.
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Frequency setting and screen resolution
If after that it was still not possible to connect the TV to the computer via HDMI, then it is possible that the computer settings do not match the capabilities of TV. We are talking about resolution and frequency. If the TV is old, and its resolution is HD, and the default systematic is configured to FHD, then TV is simply not able to demonstrate the image. In this case, you should enter the screen settings according to the instructions specified above (for each version of the OS).
The resolution is installed in the same menu where the display method is adjusted. You should first select the second screen (settings for TV) and at the corresponding menu item set the right.
After that, you need to select “Additional display parameters”. “Properties of the video adapter for display 2” and indicate the frequency. By default it costs 60 Hz, it makes sense to try smaller parameters.
Important! An interesting feature of the LG, Sony and individual models of other manufacturers is to install resolution directly in the device menu. In the settings there is a section “Connection to PC”, and it will need to install the most supported by the laptop video card or desktop PC.
Often a message about the collection of the following nature comes from users: “HDMI mode is not supported”. On the Samsung TV, this was a common phenomenon several years ago. “Treat” this was offered to switch resolution and frequency, but later it turned out that it was a factory defect, which was eliminated only by firmware. The problem is characteristic of old models, modern TV does not have it. For those who are faced with the like, the only way out is a trip to the service center.
Features of HDMI wires
The HDMI integer is actively used in modern technology for the simultaneous transmission of audio and video files. With it, you can broadcast content in the resolution of Full HD or 4K without worrying about delays or failures.
The first prototypes of the connector were developed back in 2002. After that, manufacturers in various ways modernized them. And thereby increased throughput abilities and transmission quality. In addition, HDMI began to support different formats and other interesting functions.
Version 1.4 and higher can be used to transmit the network signal. As well as 3D video or files in 4K permits. And unlike wireless technologies, HDMI provides high speed, reliability and stability of the Internet connection.
Today, the following form factors of the connector are widespread:
The latest varieties are suitable for smartphones, photographic equipment and other portable gadgets.
HDMI stopped working on a laptop: how to check and enable
I bought myself a TV recently and somehow there was no need to use HDMI cable at all before. But then relatives came home. And I decided to show the video and photo. I stick a cable, but there is no image and sound too. In general, I fought with this problem, but still I managed to solve it. Today I will tell you. Why the HDMI does not work on the laptop and how to solve this problem.
And so first of all look at the integrity of the cable. My friend has a cat, so gnawed the wire from Xbox and he could not understand for a long time why there was no image. They rarely burn, but still it is worth checking for it. Now let’s go to the settings. The configuration will be the same for all versions of Windows: 10, 8, 7 and T.D.
There is no signal on the TV on the HDMI, and there is no image
1 First of all, you need to check the connection of the cable, and remember the HDMI room number on the TV, to which the cable is connected. Check if the cable is inserted into the release on the laptop, or a stationary computer. Then, check the connection of the cable on the TV, and be sure to see which HDMI input you connected the cable. They are signed. It looks like this:
For example, I connected the cable to the HDMI entrance under the number 3. The fact is that on the TV most likely several inputs. And we will need to choose the one to which we connected the cable in the settings.
2 Check the settings on the TV. Select the corresponding HDMI input in the settings. Not always, after connecting the cable on the TV, an image from a computer immediately appears. Most likely, you will see the inscription “No signal”, or “The cable is not connected”. There should be a button on the remote control from your TV that opens the menu with the choice of signal source. On Philips TVs, for example, this button is signed as Sources. Click on it, and from the list we select an HDMI entrance with the right number.
On LG TVs, this is the Input button. Click on it, and select the necessary source. On new LG TVs on Web OS, perhaps they already did it differently. But, the scheme is always the same, on any TV (Samsung, Sony, LG): Open the menu with the choice of signal source, and select HDMI input with the desired number (to which the cable is connected).
3 Check the settings on the computer. Perhaps on the computer the image of the image to the projector (TV, monitor) is disabled on the computer). Therefore, the picture does not appear on the TV and there is no signal. Checking is very simple. In Windows 10, Windows 8 and Windows 10, it is enough to click the combination of Winp keys, and select one of the three options for the image output: duplicate, expand, only the projector.
If you choose to “disconnect the projector”, then the image by HDMI will not be displayed. In Windows 10, everything is about the same, only there the menu on the side of the screen appears.
4 If it was not possible to make a computer with the TV, then it would be nice to find out what is the reason: on the TV, on the computer, or in the cable. It is not difficult to do it. Especially if you have another PC, TV, HDMI monitor, or another cable.
Try to connect your laptop for example to another TV, or monitor. If everything works, then the problem is in your TV (which is unlikely). Thus, we will exclude the problems with the cable. Also, you can just take another laptop (even borrow from a neighbor) and connect it to the TV to which the image is not displayed. If everything works, then the problem is in your laptop (computer). Which most often happens.
5 more advice. Try to update the video card driver with a hDMI TV. Just download the driver from the site of the laptop/video card manufacturer and install it.
6 Update: In the Комментарии и мнения владельцев, Andrei shared one interesting solution. After connecting the TV to the laptop, on the TV there was a “no signal” error. But the laptop saw two monitors (built.In and TV). Helped a change in frequency for the second screen (TV). I decided to add this decision to the article, and show in more detail how to do it.
We open the screen parameters and look so that there are two displays.
Scroll through the settings page and open the “Additional display parameters”.
We look carefully. There will be “display 1” and “display 2”. Near one of the bottom it may be the name of your TV. I now have one display is not active, since the image is displayed only on the second display. Click on “Properties of the video adapter for the display. “. You need to open the properties of the TV.
In the new window, on the “Monitor” tab in the “screen update frequency” menu, we put 60 Hz. Click “Apply”.
After that, the “no signal” error on the TV should disappear. An image will appear from a computer connected via HDMI. For Andrei, for some reason, the system has installed a frequency of 25 Hz for a TV.
Click with the right mouse button on the empty area of the desktop and open the “screen resolution”. The “screen” menu should be selected. Let me remind you that this method can only be used when Windows sees the TV connected via HDMI, but does not display the image.
Go to the “additional parameters” and on the “Monitor” tab, select the frequency of 60 Hz. Apply settings.
If this method has worked, write about it in the Комментарии и мнения владельцев.
7 Update: Disconnect everything superfluous from the TV. For example, AV cable (tulip). Another device that can also be connected by HDMI. There is information in the Комментарии и мнения владельцев, which helped to turn off the hard drive from the USB port!
8 update: if you have a LG TV (perhaps this is applicable to other TVs). Then turn off in the “Fast Start” settings and the “Simplink” function.
What to do if the computer does not display the image on HDMI to the TV?
When we determined that the problem is in the computer, or laptop.
The image from us displays a video card, we actually connect to it. So, the problem may be in it. Yes, maybe something burned there, and t. D. But, as a rule, a program of programmatic nature. Something with the driver of the video card, or with the settings, so there is no image on HDMI.
Therefore, first of all, I advise you to update the video adapter driver. If you have a laptop, then go to the manufacturer’s official website, find your model through the search, select the operating system that you have installed and download the VGA driver. Then start the installation.