Im trying to put in a 2nd video card in my pc, a PCI one. Currently I have a Nvidia FX 5300 card running on a Asus amd64bit machine with XP sp2 installed. Every time I boot the pc with the 2nd video card, it hangs on a black screen right after the windows logo, before the login screen, and then it reboots. When I remove the card windows boots fine. I tried both ATI and Nvidia cards with no luck.