I have recently bought a PCI Firewire card to install in my PC. However when it was put in the free slot, the whole computer refused to come on - no power at all! I took the card out, and it worked fine. I have 3 slots, slot 3 with a modem, slot 1 with a USB2 card. I put the USB2 into slot 2, it worked, and put the Firewire into slot 1 and it didn't. Hence I don't think it's the slot. However, before I return the Firewire card as faulty, I read in the motherboard manual about IRQ's, saying some cards need configuring otherwise there may be conflicts. But that was it. I'm clueless as far as this is concerned, certainly where BIOS is concerned. The box said you simply plug the card in and it works. Not so. Any help out there please? Running XP / motherboard ASUS A7N266-VMSE.