Why does my laptop screen go blank and won't turn on?

Question

Windows

The problem is in the title. After a certain time (I have 15 minutes), the screen goes blank, and then does not turn on. Sometimes it will turn on, sometimes it won't. For a month now, there has been a problem with the graphics component of the laptop. What's the matter?
UPD: 15 minutes is the value after which the laptop turns off the screen due to inactivity. That is, as I understand it, the problem is software.
UPD1: the problem remains relevant.

Answer 1

The problem may be in the loop, when I fixed a lot of laptops with such a problem - the common wire broke.
There is also a possibility that the inverter for powering the lamps is not working (if the laptop is of course with lamps).
Well, the worst of all this - the chip overheats or "fell off".

Answer 2

I had a problem with the video card on my laptop. You don’t install firewood and everything works in 8 bits, it’s worth the current to hang firewood and that’s all - as the current Windows loads, the screen goes out, and the sound goes on.