Hey guys i was wondering if anyone can help me with this evil problem lol. my computer keeps crashing while playing games like id be able to play bf4 for a few mins then black screen. I have no idea why i have only one 240mm fan in the back im guessing its because i lack fans or idk im a no0b. here are my specs : intel i5 3570 msi r7950 16gb evo veloce mother board gigabyte gab75md3h hard drive 1 tb wd psu atx 875