I just bought a x850 pro cause my 9700 pro was artifacting really bad and now when i play games like WOW mostly it will let me play for random ammounts of time.Sometimes 1-2 mins or 20 mins then it will do a black screen and i hear music looping in background. I usually end up having to reboot is this a driver issue i have used all ati drivers trying to fix it and have removed all remenats of old drivers before i installed them.