My motherboard is a m4a79t deluxe i believe. I put both cards in both are powered each card works when swapped with the primary video card slot, and the most recent drivers are installed. However the most recent bios is not installed. But my chipset drivers are also up to date, the second card isnt even detected in device manager. And my card is showing up as a 4800 series. The cards are two Asus EAH4890's ? Or 2x Asus 4890's 1gb. What can I do? Crossfire isn't even showing up in the catalyst center, nor is the 2nd video card being detected.