I've been having this problem for a while thought it was my GPU so I got a 760 superclocked still does it thought it was my monitor so I got a new monitor and it still does it. Usully happens after about 15 minuts of game play specs:CPU fx 8350, GPU 760 superclocked, 8gb 1866 adata xpg v2 ram, Mobo msi 970 gaming, 1 1tb HDD 1 500gb HDD 500 watt PSU 80 plus 3 sickle flow case fans and a CPU cooler with the name Cooler master evo plus or something like that. I use a cable that plugs dvi into my gpu and hdmi into my monitor. I really need help I think it's either my psu gpu monitor or mobo please help