brand new build, asus M5A99fx pro r2.0, FX6300, 8gb ram(gskill), seagate sshd 1tb, 6670 HD card, win 7 pro, clean install. system will lock up if i play a video, then try to exit the program, it may freeze while it is running the video, may freeze when i open FF, lots of othere times it will freeze, i reinstalled win7 5 times and it doesnt matter with or without any drivers installed, or with or w/o any extra cd drives. anyone have any ideas? could the card be bad? cpu?