gaming pc randomly shuts off

mm713

Honorable
Dec 29, 2013
6
0
10,510
My computer will randomly shut off during gaming.
No signs of anything and then it just turns off and restarts at the click of the mouse.
sometimes its fine for long periods of time playing battlefield4 then it will cut off.
other times its fine on less demanding games

i monitor the gpu and cpu temps which seem all fine
(cpu is watercooled)

my spec is:
Windows 7 Ultimate
gigabyte 787x-oc mobo
intel core i5-4670k 3.40GHz
8GHz ram
AMD radeon HD7990
psu venom 750w

i also have watercooling to cpu
4LED fans


 

nekko

Distinguished
Aug 21, 2009
319
0
18,810
Have you tried disconnecting your GPU and trying it with the on board HDMI port to see if it happens?
I would also download and run MemTest86 to get memory out of the way.