Why is my PC shutting down?

Ingwar

Prominent
Mar 30, 2017
1
0
510
I need help discovering why is my PC shutting down when CPU usage hits 100% on all cores. I've already ruled out high temps. My next suspect is the poor motherboard. Problem first occured while playing GTA V, shuts down around 5 mins of play, sometimes less. It doesn't happen if one or two cores work at 100% only all of them so it doesn't happen while playing other games and Prime95 shuts it down after 10-20 seconds.
My specs are:
Asrock N68C-GS FX (my main suspect)
FX-6300
GTX-770
4Gb DDR3 (2x2Gb)
Antec TP3-550 (I believe this PSU should be more then sufficient)
I'm planning on upgrading the mobo but I'd like to make sure it won't happen after the upgrade.
I'm considering these mobos:
Asus M5A97 r2.0
MSI 970 Gaming
MSI 990FXA-GD80 (most likely)
GA-990FXA-UD3
Could use an advice on these. Might do slight overclocking in the future.
 
Solution
Are temperatures fine?
However your psu is pretty cheap quality, its possible psu causing it. By shutdown u mean that computer instantly goes off like u would unplug it from wall socket?
You dont know if its motherboard or not so dont even try to buy one of those. Only if you going to upgrade your motherboard buy a used one, new one its pretty much waste of money.
Are temperatures fine?
However your psu is pretty cheap quality, its possible psu causing it. By shutdown u mean that computer instantly goes off like u would unplug it from wall socket?
You dont know if its motherboard or not so dont even try to buy one of those. Only if you going to upgrade your motherboard buy a used one, new one its pretty much waste of money.
 
Solution