This has been an ongoing problem off and on for a couple weeks now. My system is 3 years old and bought from Cyberpower. It's an i7 3.6ghz with 6gb ram, Nvidia 570 Ti graphics card and an ATX 800w PSU. This problem has endured even after I did a fresh install of Windows 7 Pro.
When I launch a graphic intensive game, namely Planetside 2 and Payday 2 (haven't tried many other titles to see if they have problems too) but the game launches fine. But when I get the game loaded and get ready to go kick some ass about a second the computer will cut off completely for 5 seconds, no BSoD or anything. After 5 seconds it will turn back on and boot back up to Windows.
I have ruled out heating issues as all temp monitors appear to be in the green and my room has been quite cold (50s) the past couple nights and have still had the issue. I've pretty much cornered the diagnosis to being either the Graphics card failing or the PSU failing. I'm just not sure if that is indeed it.
Is there any advice or tests I can run to determine which it is? Or is there possibly a different cause that I'm just not seeing?