monitor black screen gpu psu

As the title states. Ive encountered this problem before while playing Warframe on highest settings, t elimenated the issue, but this time it happend while i was playing Gmod, i didint notice it was stressing my pc even tough Gmod normally doesnt cause my pc load 90% of the time. to give some...

Hello and good morning everybody. Im facing a problem with my pc. While gaming my monitor turns black ( also says no signal), audio is still on. I faced that problem while playing PUBG (after 2-3 hours of playing) and with Fortnite (like 30 mins after i launched it). League of legends is running...