Crashing issue

Hey all, i've been having these random crashes for a while now. I'll be playing a game and my whole pc will just shut off. No message pops up at any time. It only happens on some games but i haven't found out the difference that makes them crash. I don't think it's a game specific problem but a hardware problem so i'm posting here. All my drivers are up to date and i have no updates anywhere else. I also ran a Mem check through windows and malware bytes and they both came back clean. Help is much appreciated 💕💕

My specs:

32gb ram, not sure the brand. x2 16gbs

Nzxt cpu cooler and fans

AMD radeon RX 7900 GRE

AMD ryzen 5 5600 6core

Windows 11

PSY is 600-700 watts not sure exactly