I don't expect this to be the PSU. So back to what the test does.
I've lost count of when causes are all over the map. From overclocking to the old MIXED RAM to something else. Sorry but I don't see it yet.
As the title says my PC started rebooting during games, and after running many stress tests and following suggestions, I finally found a way to replicate the problem. When I run OCCT PSU stress test, my PC reboots within a second. It was unexpected since running Prime 95 together with Furmark didn't cause any reboots.
Anyway, do you think the issue is my PSU? I already have a new graphics card arriving within 10 days. How should I go from here to find the issue? My specs here: http://pcpartpicker.com/p/vK3Nbv