4 ways to solve the problem of no image on the screen, dark screen, no signal
**** If it keeps recurring, it could be due to a number of reasons. The only thing I've experienced myself is that the graphics card is about to fail.
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Fix a computer screen that won't turn on but still works:
1. Check the cable between the monitor and the graphics card. Unplug and replug it. It might be loose.
2. The graphics card and the graphics card slot on the motherboard might not be secure. Try unplugging and replugging it. Try cleaning the graphics card by rubbing the copper strip with an eraser, brushing it clean, and then replugging it into the motherboard.
3. The RAM might not be secure. Try unplugging and replugging it and cleaning it. Or, the RAM slot might be dirty.
4. ......... / Watch the clip.