I've recently built myself a new PC (details below) and i'm having some problems with it randomly turning itself off sometimes.
Asus P8Z77-V Pro
8Gb (2 x 4GB) G.Skill Trident X
EVGA GTX 670 2Gb
Antec High Current Pro 750 Watt
The problem I have is as follows:
I can run the PC for browsing, document creation, etc just fine (all 2D stuff)... it's as soon as 3D gets involved that the problem seems to occur.
I've got Minecraft installed and Skyrim (for problem diagnosis)... I can run either of these games for varying amounts of time, sometimes for as little as 1 second or as long as 15 mins, then all of a sudden the power to the PC is just cut, then comes back on again a few seconds later (I've no surge protection on the plugs).
I think it's the motherboard doing the power cutting and as such there's no logs for me to look at as to why it's doing so.
I've ran memory tests to rule out bad RAM, i've run GPU tests to rule out anything obviously wrong with the graphics card but nothing is making itself obvious as to the cause. I did have an issue where the GPU seemed to be pulling too much current from one of the rails on the PSU (the motherboard cut the power because it thought there was a surge) but i've fixed that now by using 6pin connectors from 2 different rails.
All temps are within acceptable ranges so it's no an overheating issue.
Basically, what i'm asking is if anyone has any ideas what might be the cause?