Other question:
If the card is blowing it's fan for 100% at startup and it's not recognized, is that a driver problem or a presence problem?
So if there would be a driver issue, it would be recognized in device manager but with an exclamation mark or something?
Cheers,
I think that's not a driver issue. 100% fan is triggered by card bios so it's alive but not seen by motherboard for some reason.
Can you seed all card's with flash tool from dos?