Question All monitors turning into weird colours and patters when playing a game (after few minutes); pc not responding at all

Nov 4, 2019
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View: https://i.imgur.com/1QPGgpQ.jpg

View: https://i.imgur.com/MU15Vff.jpg

View: https://i.imgur.com/Bd491HN.jpg


Started 2 days ago, was playing something on an emulator(gamecube), played around with a lot of graphic settings and hacks, suddenly I got those screens, everything stops working. Had to turn pc off(pressing button).

Next day, turned pc on, played a normal game. after 1 min I get those screens again (each time different colour). Turn pc off, try turning it on again, it does turn on, but nothing works: monitors stay black and say they arent connected. Turn pc off, wait 5 min, turn it on, works again.

Then I start a game, 5 min pass, I get those screens again, turn pc off, turn it on, monitors stay black, nothing works, turn it off, wait 5min, it works again.

Very weird. I use windows 10 ltsc if that helps, never had any problem of this sort.

R9 280x, pc is 5 years old, always has worked