Hard system restart under GPU load

Squidimus

Commendable
Dec 9, 2016
3
0
1,520
CPU: i5-6600k
GPU: 970 GTX (Later a 1070)
Motherboard: MSI Z170A Gaming Pro
RAM: Corsair Vengeance 16GB (2x8)
PSU: EVGA SuperNOVA 550 G2

finished the build Nov 2015

Have been dealing with this issue for the past few months first starting out with a rare(maybe 1 every 2 or 3 months) system freeze with a loud screaming coming from the speakers starting 6 months ago. Now however in the past month The entire system will hard restart, no BSOD or errors in the event log outside the kernel failure. As if the power cord was pulled followed by a immediate restart.
This issue has only gotten worse however in doing so allowed me to track it down to GPU load to trigger the issue.

Have run 5-6 passes of memtest86 for each stick individually and have checked the OS for issues with sfc/scannow which turned up nothing.
Next was Chkdsk and the program speedfan for harddrive failures. Followed by Prime95 which did not trigger a shut down after a few hours.
Last was Furmark which caused a system shut down almost immediately with heavier settings (MSAA0x VS 8x) was replicated with games as well Civ6, overwatch, ect.

However games that were light on the GPU all settings to low on overwatch with restricted fps or factorio, stardew valley, terraria I could play for hours with no issues.

Motherboard and GPU drivers are both up to date per their respective sites and temps for both are:

GPU under load: 64c
CPU under load: 42c
various temp sensors in the case all show low 20c

Thinking it was a PSU failure I RMA'ed it however the problem was still there, RMA'ed the mobo and still no change. 1 or 2 sticks of RAM did nothing. Finally purchased a new GPU since I was thinking about upgrading anyway and same thing.

I've used a different surge protectors and none at all with no change. Used different wall outlets with a heavy duty extension cord to separate floors and no change.

I'm dry on ideas and would really like some help on this. No overclocking has been done
 
Solution
Tried out the CMOS reset with similar results. However convinced a buddy to let me strip out his 600 Watt PSU that we know works and so far the problem is solved with it running The Heaven benchmark for an hour at this point.

Squidimus

Commendable
Dec 9, 2016
3
0
1,520
Tried out the CMOS reset with similar results. However convinced a buddy to let me strip out his 600 Watt PSU that we know works and so far the problem is solved with it running The Heaven benchmark for an hour at this point.
 
Solution