I usually don't post for help but...

So as the title says I usually figure out problems on my machine by watching tutorials or following guides. Problem is nothing that I have tried so far has had any change on my problem:

Some days ago I was playing on my machine and it suddenly turned off. Rebooted and while playing the same game the machine kept turning off on the same exact in-game place (I thought it was a software bug)

While playing another game machine shut down again. Now I knew it couldn't be a problem with the games.

My windows 10 computer now takes 2 attempts before booting, and it can't go to sleep anymore.

Checked the bios booting priority seems ok, checked PSU looks fine, checked drivers, windows diagnoses, etc...

If anyone has an idea or a clue on the origin of the problem ?

Anyway thanks, will try to change the battery maybe that's the problem?