Why is there no signal on the monitor after turning on the computer?

Reasons for no signal on the monitor after the computer is turned on: 1. The host connection of the monitor data cable is loose or has poor contact; 2. The memory module is loose or there is too much dust; 3. The display is faulty, it is recommended to find a professional Maintenance personnel should perform maintenance; 4. If the motherboard is faulty, it is recommended to contact professional maintenance personnel for maintenance.

The operating environment of this tutorial: windows10 system, DELL G3 computer

I don’t know if you have encountered such a situation, that is, the computer uses time After a long time, I found that there is no signal on the monitor after turning on the computer. How do you usually solve this situation? Today the editor has brought you relevant tutorials, I hope it will be helpful to you.

The monitor shows no signal when the computer is turned on. I believe many friends have encountered this situation. Do you know what the reason is and how to solve it? Let’s analyze it together.

#1. When the host connection of the monitor data cable is loose or has poor contact, the computer monitor will display no signal. This problem is easier to solve. Check whether the computer data cable has fallen off. If so, reconnecting it will solve the problem. If there is poor contact or the data cable is damaged, you can directly replace it with a new data cable.

2. This situation can also occur if the memory module is loose or there is too much dust. The most obvious situation is that the host is running normally, but there is no signal on the monitor. We can take out the memory stick, clean the dust on it with a paper towel, and then put the memory stick back in its original position. The problem of no signal on the display screen will be solved.

3. The display screen is faulty. This can also happen if the monitor itself is broken. Generally, if there is no signal on the monitor, it is most likely due to an abnormality in the high-voltage board, a fault in the backlight circuit, or a fault in the AD driver board. These faults generally cannot be solved by oneself. It is recommended to find professional maintenance personnel for maintenance. If the fault is too large and repair is cost-effective, you can also buy a new monitor directly.

4. Motherboard failure will also cause you to be unable to boot and display no signal. This cannot be solved directly. It is recommended to contact professional maintenance personnel for maintenance.

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