Why the TV does not see the laptop via HDMI

Today, anyone using an HDMI cable can connect laptop, as well as a desktop computer to a flat-screen LCD TV, and then enjoy the expanded image. Such a connection is not always successful: for example, no sound. But there are cases when the computer does not see the TV connected via HDMI at all, although you have just purchased the wire in the store, where its versatile testing was carried out. There are many reasons for incorrect cable operation, and the search for a true problem needs to be done consistently.

We carry out diagnostics

What should be done 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 done by all the rules, but still there is no image, then we connect the laptop to the TV, while consistently checking all possible malfunctions.

Cable check

Not a single product, not even the most reliable brand, is immune from manufacturing defects, especially during manual assembly. When buying, the image quality and sound are checked, but the specific connectors and connection jacks are never checked on the TV - at best, they are certified in their presence, and even then not all buyers. It often happens that the cable itself does not work, although it is not used for such a long time. It is necessary to connect the same cable, but to another device, if it functions normally, it means that the reason that the computer does not see the TV is in the latter. It is necessary to diagnose the TV for recognition of similar signals.

Check the signal source

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

Work with the monitor

If the laptop does not see the TV while simultaneously connecting multiple monitors, then it is necessary to carry out additional settings. These simple manipulations can be performed by each user without special education:

• move the cursor to any free space on the desktop;
• for the appearance of the menu, you must click on the right mouse button;
• we find the section "screen resolution" - Windows 7, and if WindowsXP costs, then "graphical characteristics";
• then choose 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 starts to see TV.

Video card and drivers

Open the "Device Manager" of your laptop to check the driver versions of the installed video card. Obsolete software is the main reason that the TV does not 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 can 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. With the help of a powerful antivirus program (computer protection program) that can find all spyware of any level, scan your computer carefully and reconnect.

Some experts strongly advise checking the version for your TV platform Smart: sometimes a laptop using HDMI is not connected for this very reason. Update Smart TV firmware and perhaps the problem will disappear.

Connection port malfunction

Any connector can have mechanical damage or burn during a power surge, which is not uncommon in our electrical networks. Experienced masters advise you to connect the HDMI cable when disconnected devicesIt is recommended to disconnect even the antenna cable for this time.

There is such a 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 the 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 elimination of various violations is already a solvable task. Here is the approximate procedure for eliminating detected faults:

1. Check the quality of the connection, visually monitor the external state of each connector or connecting cables, if the laptop has ceased to see the TV.
2. Then the configuration of the computer systems is checked: check what choice was made in the menu items responsible for connecting the devices.
3. Check for updated video card drivers.
4. In some cases, it does not hurt to once again check the settings of the video card itself.
5. Repeat an intelligent scan of the entire computer to make sure no malware.
6. Check visually the status of multimedia ports, their proper operation - a positive result will be immediately visible when connected to another device, for example, dvd player.

Signal test

If you have done everything possible, but there is still no signal from the laptop to the TV, try other types of connections.Use the empirical method when all existing connection methods are used consistently. The checkout process will look like this:

• First, we determine the available connections and connectors that are used by our home appliances;
• turn off 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;
• activate the laptop, if the signal passes, then on the TV screen should display a picture similar to the operating system;
• no signal - go to the “Device Manager” section, find out what are the active types of connection;

• if it is possible to install connection via VGA, then you need to connect to the products a similar cable;
• then we perform the same actions as with HDMI, only on the remote, press the "VGA" button;
• if you decide to make a connection via DVI, then we connect the cable to the corresponding connectors; in the TV settings, select the same option.

If the equipment has not yet begun to work together, the reason lies in the internal damage that only the master can diagnose and fix.Of course, if you have knowledge in the field of electronic filling devices, you can try repair the TV do it yourself.