So a few hours I installed my brand new Seagate Barracuda 2TB ST2000DM001, I watched about an hour of YouTube then played one match of Competitive on CSGO on the lowest settings which lasted maybe just over an hour, after it finished I was on CSGO main menu for a couple of minutes then everything froze then blue screen of death.
After I restarted everything was fine, so I checked the dump file and it said nvlddmk.sys caused it, now about Feb 2016 the same thing happened when I played on SMITE on the highest settings, after 5 minutes it would BSOD and also on CSGO on the lowest settings it would BSOD after about 30 minutes. the cause that I found out was my cheap PSU, so I bought a brand new EVGA 650 W GQ Series PSU and it worked fine after that. I really don't know if a brand new EVGA 650 W GQ Series PSU only 7 months old can go bad but I also don't know if a second HDD with nothing on it can cause a Blue Screen of Death.
My specs:
Asus p6x58d-e
EVGA 760 2GB (Blower type) 347.88 display driver
Corsair XMS3 8gb
EVGA 650 W GQ Series PSU