The hdmi output on the computer stopped working. HDMI does not work on laptop

Greetings to all! Not long ago I encountered problems on one laptop. The client claimed that HDMI does not work on his laptop, which is quite strange, but the rest works without problems. That’s actually why I decided to write a short note with possible reasons loss of signal from the HDMI port.

In my note I will not describe problems with Windows XP, since I think that it is already morally outdated and I see no point in solving problems that are found in modern operating systems simply no.

First, let's look at what an HDMI port on a laptop is and what it is used for. Unlike VGA and DVI (analog and digital), HDMI transmits not only a video signal, but also sound. Therefore, you can connect your TV to your laptop with just one cable, and the TV will have video from the laptop, and even audio. At the beginning of the journey HDMI interface Not all video cards had a built-in digital sound card, which created some problems with audio output via HDMI, but now these problems no longer exist.

To connect your laptop to your TV, you just need to connect them with an HDMI cable. Usually this is enough - the laptop screen will expand onto the TV. Quite often, people think that the TV will duplicate the laptop monitor, and they believe that the cable does not work only because only the desktop wallpaper is displayed on the TV.

HDMI does not work on a laptop - looking for reasons

The first thing you should pay attention to is the reliability of the connection. It is possible that the HDMI cable is loose in the socket, which is unacceptable. Problems are also possible in the cable, in these cases everything is checked by replacing the cable with a new one - if the problem remains, then the cable has nothing to do with it, we look for the problem further.

The second and most common reason is the wrong input port on the TV. For example, I have several HDMI ports on my LG TV, so in the TV settings it is important to set the correct input signal source, otherwise you will not see pictures on the TV screen.

Just check which port you inserted the HDMI cable into, and select it in the signal source for your TV.

If there is no sound, then you need to choose through which device to output sound to the TV. The fact is that the laptop also has a regular sound card, to which you connect speakers or headphones with a microphone, and we need to route the sound to HDMI, I touched on this topic.

It happens that they connect via a DVI-HDMI adapter, whereas as I said, the sound will not be transmitted to the TV. For these cases, you need to use a special adapter that has both a DVI video input and an audio input. Otherwise, no sound unless you connect it separately to the TV.

P.S. Of course, there are a thousand more reasons why HDMI does not work on a laptop, but we have looked at the most common ones. In fact, if everything is in order with the laptop and TV, there can be no connection difficulties.

In contact with

Before HDMI took the world by storm, people used VGA and DVI extensively. Today, you will hardly be able to find a modern computer or laptop without HDMI, which not only transmits video or images to a large screen, but also provides the user with high-quality sound. If HDMI does not work on your laptop, you can try to fix the problem yourself. To get rid of the problem, you first need to find out its nature:

The laptop is connected to the TV, but instead of a video or image it displays a blank home screen

In this situation, the problem lies in the settings, and does not at all mean that your laptop has a problem HDMI connector or the cable is not working correctly. The fact is that when you connect a TV to a PC, it becomes its extension, or rather acts as an auxiliary area of the desktop. To test this, you can try simply moving one of the windows to the sides. It should appear on the TV screen. If you want HDMI to work like a charm, you need to enable duplication mode using special settings:

Move the mouse cursor to a free part of the working screen and right-click on it.
On the work field with a drop-down list, find the “Screen resolution” or “Tap settings” column.
The system must automatic mode find the TV display. If this does not happen, use the discovery command.
Next, you will need to find a menu called “Multiple Displays” and apply the “Duplicate These Screens” command to it.

The laptop shows the connection, but the TV does not show the monitor screen

The first thing that should interest you is the reliability of the connection between the TV and laptop. If the HDMI wire, or rather its connector, dangles in one of the working sockets, the device may not cope with its duties. Sometimes the cause of problems is damage and kinks in the wires. The only way to deal with this problem is to replace HDMI cable. If you have been using its services for a long time, this is quite normal. However, a new HDMI cable should not cause such troubles to its owners, so you can safely complain to the seller.

By the way, a lot also depends on the choice of socket for connecting to the TV. Some models are equipped with several of these connectors. Be sure to test each of them. The default settings may only allow signal reception from one jack.

The picture is transferred from the laptop to the TV, but the sound still comes through the computer

If you dig a little into the settings, the problem will solve itself and without the help of specialists. You will need to set the right direction sound signal. To do this, use the step-by-step instructions:

If the laptop and TV do not respond at all to the HDMI connection

Unfortunately, HDMI ports on a laptop or TV also cannot boast of a long service life. Most often they burn out due to voltage surges or incorrect use. HDMI wires. Under misuse understand a safety violation or contamination of the inside of the nest.

To find out the source of the problem, you need to try connecting another TV or monitor to the laptop. If everything works correctly, there are no problems with both the wire and the computer. You will have to “treat” the TV or buy a new one. Otherwise, you should not try to replace the HDMI jack yourself. Entrust this matter to professionals from a specialized service center.

Detailed description

The problem where The computer does not see the TV via hdmi , and at the same time a message appears on the TV screen No signal, may have several reasons.

SETTING UP THE HDMI CONNECTOR ON YOUR TV . Often, for one reason or another, the signal may disappear due to the wrong choice of connector on the TV. If the TV has several hdmi ports, it is possible that another source was selected by mistake - another connector. In this case, using the remote control, try turning on each of the connectors. Perhaps this will be enough for the signal to appear.

CHECKING CABLE CONNECTIONS . One of the reasons for this error is incorrect or incorrect connection of the cable to the appropriate hdmi connectors. In this case, it is worth checking the reliability of the connections at both ends of the devices.

PROBLEMS WITH EQUIPMENT . During the operation of the computer, it is possible that technical malfunction video transmitting device - video card. Perhaps over time the device has become unusable. By the way, here we can note a not so frightening moment...

CHECKING THE VIDEO CARD MOUNTING . Perhaps the video card is simply disconnected from the motherboard. In this case, it is necessary to check the reliability of its fastening to the board. Important! Work should only be carried out when the power is completely turned off: You need to unplug the power cord and also disconnect all cables from the video card.

HDMI CABLE IS DEFECTIVE . Alternatively, try connecting a different (working) cable.

TV DOES NOT SUPPORT HDMI . In general, if the TV has an HDMI connector, then it is supported. However, this problem may occur in cases where, for example, the device is set to a screen resolution that is not supported by the TV. There is no reliable data on this error, but this option can be noted as a topic for reflection.