I've had alot of troble with this and i think it has something to do with the Pci Bridge and the Agp they are connected (correct if wrong) but i need some help any ideas would help. The computer will not come on after many trys when agp card is installed. in the bios i have agp/onboard and PCI opitons i put it on agp/onboard. but it won't boot up or even show a display on the montior. It only sets and humms. So any ideas at all for this problem i need to card guys. i'm a heavy gamer and any tweaks or updates ANYTHING. will help me. thanks