Weird game crashes

[Ben415]

Hey guys, I recently built a gaming computer, specs are listed below. Some games run great, like borderlands 1 and 2 run perfect, but Chivalry, Batman Arkham Origins, Crysis and battlefield 2 all crash after about 5 minutes, by freezing up and the speakers make a loud buzzing as though they are replaying a very short bit of sound. Any advice? and I am using updated bios, though it may say im not. Thanks a ton guys!