Question My PC crashes when I play certain games

May 22, 2019
So around October last year my PC started crashing randomly when playing certain games, like completely shuts off, and then it won't turn back on for like 10-20 minutes AND I have to power cycle it. But this only happens when the ambient temp in my room is warm and when the game is seemingly demanding, I can play fighting games all day long with absolutely no issues, even with recent games like MK11, but soon as I switch to Apex or Quake I play for like 10-15 minutes and my PC shuts off. All my temps seem absolutely fine though which is what has me really confused. I did find out a workaround that is far from ideal, if I take the side panel off and jam a room fan next to it then I'm good. I had a mate that works with computers suggest that it's the PSU that's the issue but I wanted to see what some others thought before I more on a new PSU and then have the same thing happen.

My specs are:

  • Asus ROG STRIX Z370-F
  • Intel i7-8700K
  • GTX 1080
  • 16GB RAM
  • Cooler Master MWE 750W Gold PSU
Here's the userbenchmark:

Here's the temps for when I ran the benchmark (this didn't cause a crash) : View:

Here's the temps when I was playing quake (several minutes before my PC crashed) : View:

I made sure when I built the PC that there would adequate cooling for an Australian summer so I have an NZXT Kraken X62 with a push-pull config and two 140mm exhaust fans. I also used thermal grizzly kryonaut paste for the extra insurance.This has had me confused and frustrated for a way too long and I wanna get it sorted.

Cheers in advance.

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May 22, 2019
I would say that the PSU is your culprit here if a demanding game is taxed on the system. Also, what are your idle temps and what are you ambient air temps?
Here's the idle temps: View:

I'm leaning that way myself considering my temps are all fine and everything is cooled adequately, it's just had me really confused that using an external room fan solves the problem.

Also the rooms idle temps max at around the mid 30c range 'cause I live in Australia. There's no issues during winter when it's cold in my room but when it heats up the issues arise.
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