[SOLVED] Pc random crashes

[Greenlight10]

So i was playing minecraft like all people does when they're bored, everything was going great but out of nowhere my pc crashed, no blue screen of death or anything. it also crashes when i launch csgo or any game that runs in fullscreen mode.
OS: windows 8.1 (64bit)
Ram: DIMM 4GBx2 (3.98 usable)
GPU:Geforce GTX 650 Ti
Cpu:amd FX(tm)-6300 6 core processor
PSU:550w
i ran memory check it didnt find any problems
i tried swapping harddrives
i resetted bios to default settings.

 

[SteveRX4]

When you say "crashes" - what do you mean?
Just quietly turns the PC completely off?
Quietly goes back to desktop?
Windows stops working and an error message pops up?

Is your CPU or GPU getting hot?

What make and model PSU have you got?
Install and run HWInfo64.
What min and max 3.3v, 5v and `12 v readings arte you getting?

 

[Greenlight10]

When you say "crashes" - what do you mean?
Just quietly turns the PC completely off?
Quietly goes back to desktop?
Windows stops working and an error message pops up?

Is your CPU or GPU getting hot?

What make and model PSU have you got?
Install and run HWInfo64.
What min and max 3.3v, 5v and `12 v readings arte you getting?

It basically restarts but it doesnt even show the shutdown screen it just restarts and shows bios and then "starting windows" and when windows start it gives me error message saying unexpected shutdown and on event viewer it says the system has rebooted without cleanly shutting down first. Source: kernel-Power Level: critical. my psu is MPH 550 by mars gaming. +3.3v minimum 3.392 max: 3.424 avg: 3.422 +12v minimum:11.968 max: 12.056 avg:11.992

 

[SteveRX4]

The PSU voltages aren't too bad. But if you ever get the chance - replace it with something better eg https://linustechtips.com/main/topic/1116640-psucultists-psu-tier-list/

It seems that your prblem is a hardware related problem eg faulty power button per https://forums.tomsguide.com/threads/kernel-power-how-to-determine-the-cause-of-the-crashes.415843/

So I think you need to dismantle your PC, clean everything, inspect everything and rebuild it.