Have you tried either card in a different pci slot?
i have only tried the 1st and 2nd slots, not tried the third yet
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Have you tried either card in a different pci slot?
bah, and you say the 6600 isnt working, and you have had it working with that same monitor before?
ok, now the fan should be spinning it its getting power and that shouldnt be a mobo issue, I think.
You are putting the extra power cables into it, and you are making sure those cables are plugged in CORRECTLY into the psu? With my corsairhx I need to use certain ports, these are coloured blue. They can also be a ^%^ to get in right.
Also if that doesnt work, does the fan on the 480 not spin up also?
The only time I had a new build black screen me whilst spinning the fans, not posting and without beeping at me was when I had somehow managed to bend a few pins in the 775 cpu socket (I still don't know how the hell that happened) - Straightened them out carefully, replaced the cpu and all was fine.
cool i will check that out in a min.