I installed Windows 8 the day it came available, excited to see what it had in store. I was dissapointed to find that there was no available drivers for my card. Went back to Windows 7. Today I decided it was time to try again -- and again, same issue. I have tried the drivers for the legacy cards (12.6) and the actual display driver fails everytime.
ASUS Rampage II
HD 4780x2 (diamond)
It's like the card isn't being recognized, despite it working 20 minutes ago on Windows 7.