Man, I thought I had this problem solved. Weeks ago my computer began freezing totally when playing games. It would freeze and make this looping, somewhat high pitched sound. Then it did it with some video. Then my pc would freeze randomly at the desktop or in other programs, but with no sound. Anyway, after doing a little homework, my first idea was to get a new psu. The one I had was crappy and weak. So I get an Antec True Power 430w. That was a couple of weeks ago, and everything has been fine since then. No problems at all. That is until tonight. I borrowed HomeWorld from a friend and was playing for the first time. Anyway, after a couple of hours of play it does the same old crash with that looping sound. Anyone have any ideas at all? Do you need anymore info? Please let me know, and any help is greatly appreciated.