So let me get this straight, your computers motherboard and PSU died out on you... "exploded"... So you want to make sure your AGP video card and whatever PCI expansion cards you have still work, but you don't want to risk your other healthy computer?? Well... usually expansion cards aren't the cause of death for motherboards and PSU's... it's usually the other way around, a faulty motherboard or PSU will damage the expansion cards... so you shouldn't have much to worry about...