System reboots when running last scene of 3D mark11

stefan mackey

Honorable
Jul 3, 2013
21
0
10,520
Good morning all,

So here's my issue whenever I run the latest versio of 3D mark demo test my computer will shoot through everything till the last fight scene sequence then it just reboots, I get no error messages, strange system beeps. Nothing. The settings for 3D mark are all at default I believe it's 720, not even 1080 resolution. Now my specs:
MB gigabyte 990 UD5 bios updated to latest
16gb corsier DDR3 1600 cl9
brand new stock clocked gtx 780 ACX
4 SSDs Samsung 120gb, 500gb adata, and 2 raid 0 adata 60GB ssds
1 1tb 7200 RPM
750watt owl tech rated at 80plus silver
Oh yeah and a basic LITE ON DVD RW

I've tested the ram over night with memtest, and the latest games like hitman absolution, crysis 3, far cry 3, run perfectly including FURMARK I have no issues. Please help me solve this. I'm thinking possibly I need a new PSU? But this one I have is pretty good rite?