PC Randomly Shuts Off

[HashtagGrandpa]

So this is a weird one and I am not sure how to fix it. 

Spec list:

i5-3570k

Gigabyte GA-Z77-DS3H

8gb of ddr3 Patriot 1600mz ram

Gigabyte RX570 8gb

600w PSU

 

So whenever I am gaming/Using a few applications my PC just full turns off and requires me to unplug my PC for a few moments before it will power back up. I have ran a furmark and a prime95 stress test at the same time and I didnt see temps above 70c and my PC did not shut off while on full load, I have ran memtest86 and saw no errors, I fresh installed windows and it still does it. I am not sure what do to or whats wrong. Any help would be nice,

[Pa1yn]

Maybe your components need more voltage which the lack of could be causing instability?

[HashtagGrandpa]

45 minutes ago, GougedKirby522 said:

Maybe your components need more voltage which the lack of could be causing instability?

I haven’t adjusted or OC’d anything. voltage is on auto. It should get the juice it needs