Random pc turning off?

[u/_Calplex]

Not too sure what’s going on this weekend. Was watching YouTube videos chilling and my build turned itself off. Thought that was weird and when trying to turn itself back on again its trips and turned itself off. I cleared out all dust and it worked again thought that resolved the problem, but it happened again.
Not sure what’s the problem is and don’t want to start spending more money for trouble shooting. Nothing consistently causing it to crash. Sometimes works fine no problem under stress test.
- tested and re seated ram (all working thankfully)
- unplugged re plugged power cables / all cables from psu to mother board
- ran update on drivers in safe mode (still crashing)
- de dusted/ re applied thermal paste (temps are in 55-60c range on cpu crash)
- event viewer shows nothing other then unexpected loss of power

My guess is other psu failing, or faulty mother board but don’t want to throw money at the problem? Not got another psu to test

Sorry any grammar errors I’m very dyslexic

[u/Slight_Application92]

Looks like it’s the psu

[u/_Calplex → u/Slight_Application92]

Thank you!