What should I do if the computer shows no signal when I turn it on?

The computer shows no signal when it is turned on. There are many reasons for the failure.

Fault cause analysis and troubleshooting reference are as follows:

1. There is a problem with the monitor and connecting cable. It is recommended to replace it with a new monitor and connecting cable;

2. For graphics card problems, it is recommended to change the monitor connection cable from the independent display to the integrated display. If the integrated display can display normally, it is a problem with the independent display. Take out the independent display and wipe the gold finger of the independent display with a rubber band. Then clean the dust on the PCI card slot of the independent graphics card and insert it firmly. Restart the computer to see if the fault is repaired.

3. For memory reasons, unplug and insert the memory again, or use an eraser to wipe the gold finger of the memory and clean it. After the card slot is dusty, insert it firmly and restart;

4. The host is dusty and dissipates heat. Clean the host and remove the graphics card and memory. After cleaning is completed, insert it firmly and restart the computer.

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