PC randomly restarts while gaming

[Pooherino ツ]

Reposting this, hoping I would get more help, since the last time, some ppl told me its a psu problem, which I dont think it is, and i also dont wanna pull out my psu, my build is in a mini itx case, so thats a headache of its own, but waiting for RMA would kill me.

 

So as the tittle said, my pc keep randomly restarting while I'm playing Fallout 4, it hadnt happened on any other game yet, just Fallout 4. Probably cus the other games that i play isnt that demanding, like cs go and dota.

I undo all my overclock, but it still happens. Its not a heat problem either cus the cpu runs at 45-50C and gpu runs at 75C while in game

It could be a memory problem, because recently, sometimes I would get "memory management error" blue screen when I boot up the system
 
Please help, spec in the signature, thank you

[jcw150]

Try stressing the CPU, GPU and RAM individually to see if you can replicate the crash

[Pooherino ツ]

Try stressing the CPU, GPU and RAM individually to see if you can replicate the crash

its kidna hard cus the crash is like really randomly, since it doesnt crash right away, it crash about 1hr-2hr or so into the game. How would I test ram btw

[jcw150]

Windows memory diagnostic tool would be a good starting point 

[theereal]

Try stressing the CPU, GPU and RAM individually to see if you can replicate the crash

This- Would be a good start

[thekeemo]

Try doing a memtest

[jcw150]

furmark and intel burn test are what I use