acupalypseCouple of things:1. What PSU do you have?2. Have you reinstalled all MOBO drivers after windows OS reinstall? Is BIOS on the latest update?3. Any other peripherals connected that you can maybe try to isolate?Maybe unrelated to your issue but a few years ago there's this particular game that one day started giving me random system crash/reboots while everything else worked solidly. I had to swap and tried out a lot of parts from PSU, GPU, memory, hard drive to mouse/keyboard. All that's left was MOBO and Asrock replaced it under warranty. Reinstalled everything from scratch but still the same issue on same exact game. Turned out to be the combination of GPU and MOBO when running that particular game. Since it's more expensive to replace GPU, I just replaced the MOBO with Asus Hero and problem was finally solved.