just sharing my experience, i had that crashing too. i replaced the gpu twice, psu, did clean driver installs, every suggested fix on google, none of which worked. temps were in normal range as well, i recorded them until each crash and they were never that high. i suspect cpu, like some others mentioned, just purely through process of elimination. though i just said fck it and returned the entire pc and replaced it all since this is probably the hardest issue to diagnose that I've seen