Well thats pretty sad to hear, having a modern gpu and the drivers wont even work.
I tried stressing the gpu and no, the fans wont even spin at 60 degrees. Is there any way to contact asus you think?
With further testing it seems like when the card hits higher degrees the fans would try to spin up but then quickly die again, pretty weird behavior.
Id say the that the fans are functioning because everything's fine inside of windows.