What is the reason for no signal on the monitor?

When we use computers, sometimes we may encounter problems with the computer monitor, for example, the computer monitor does not light up and has no signal. For this kind of problem, the editor thinks that we can re-plug and unplug all the data lines of the computer monitor to try to see if it is due to poor circuit contact. Or you can check to see if the host is not powered on. Let’s take a look at the detailed steps on how the editor did it~

What’s going on when the computer monitor doesn’t light up and has no signal

1. The data cable is damaged

Check whether the connection cable between the computer and the monitor is loose or cracked

2. The graphics card is damaged

Open the computer cover, before opening the cover Don't forget to discharge static electricity, check the motherboard, graphics card, and power supply to see if there are any abnormalities or smells.

Check the memory module, graphics card and hard drive cables, and whether the CPU heat sink is loose.

3. Unplug the graphics card, memory stick, find a clean cloth and an eraser, a little alcohol,

use the eraser to clean the graphics card and memory stick Pay attention to the oxidation on the gold finger and wipe it with an eraser, then wipe it clean with a cloth with alcohol and set it aside.

4. Clear the excess dust on the chassis, motherboard, and CPU heat sink, which has reached the memory module and graphics card motherboard slot.

Pay attention to the need for cleaning Use a softer brush, be sure not to let the hair get in!

5. Clean the CPU cooling fan dust. If possible, it is recommended to replace the CPU silicone, but before disassembling the CPU fan Be careful,

cannot be pulled out hard, use Intel's original rotating buckle to gently pull up, and refer to the manual for other heat sinks;

Complete the appeal steps. Install all accessories, check whether the installation is in place, and then put on the computer cover and start the test!

Generally speaking, the memory module is more likely to be present, so you can focus on checking the memory module first!

More Information related to multiple computer monitors:

How to adjust the wrong color of win10 computer monitor | Tutorial on how to solve the problem of black screen when the monitor exceeds the frequency limit

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