I recently completed a build (i5 3570k, HD 7870 graphics, 8gb RAM @ 1866mhz, 2tb HDD). And it performs fine under normal internet use, but when I start any game it crashes (blue screen) after about 2 minutes. Initially this only happened in certain games (Burnout: Paradise, Battlefield 3), and even then I was not getting the frame rate that I feel I should have. Crysis 3 on medium settings was at about 12 FPS, and that seems way too low for the hardware I have. I could hold 50 FPS on Garry's Mod, but now even that causes a blue-screen. Any help would be appreciated, thanks in advance!