I read through a few similar threads and noticed that the PSU was a recurring problem for others with similar problems, so I upgraded from a Corsair VS 550 to a Corsair RM 650, but the problem was still occuring.
I then figured it must be the CPU or the mobo, so i upgraded my mobo from an ASRock H81 PRO BTC to and ASRock B85M Pro3, but still no fix.
I ran memtest86 to check my ram through 12 passes over 14 hours and there was no errors found.
I have disconnected the reset switch from my case to the mobo and tried a number of other things like updating drivers. The issue still persists when i remove my GPU, and I have monitored my CPU temperatures during gameplay and they rarely exceed 45 degrees Celsius. I have tried running from different powerpoints and on different powerboards to see if that was the issue. I have done a total reinstall of windows, only installing the necessary drivers and downloading 1 game (Fallout 4). I have tested with 1 stick of RAM removed at a time. I have stress tested the CPU with Prime95, and it handled the tests fine. None of these things have been conclusive and I'm not sure what step to take next.
I have since also attempted a few things to fix it based on the advice of another user from the Windows Crashes, BSOD, and Hangs Help and Support section. These are all listed in the comments section of my original post http://www.bleepingcomputer.com/forums/t/610316/computer-randomly-restarts-while-playing-games/#entry3977700
This is a quick summary:
- Looking for patterns in the administrative events log in Event Viewer
- Updated BIOS
- Uninstalled and reinstalled all hardware drivers
- Performed a total wipe and reinstall of Windows 8.1, then upgrade to Windows 10
- DISM/SFC Scan and restore
CPU - Intel i5 4690
GPU - EVGA GTX970 ACX 2.0
Mobo - ASRock B85M Pro 3
PSU - Corsair RM 650
RAM - Patriot DDR3 1600 2x4GB
OS - Windows 8.1
HDD - 1TB Seagate 3.5" Barracuda 7200rpm
SSD - Samsung 120GB 840BW EVO
Case - Coolermaster RC-K282 mid tower
Thanks in advance,