I get either a BSOD with IRQ_not less etc. message or I get a complete lock everyone time I play a flash or cd/dvd game. E View attachment 53622 View attachment 53623 View attachment 53624 vent log shows categor 102 event 1003 each time attaching mini dumps. system athlon 64 3400+ 2.39 ghz 2 GB Ram Windows XP media center SP2 Linksys wireless G USB adapter Soundblaster audigy 4 nvidia geforce 9400GT I have switched video cards, tried removing soundblaster, swapped ram chips with no success. Thanks for any ideas.