As you point out in the thread his board is 2.0 so compatibility shouldn't be an issue. If I had to guess he simply got a bad card. It happens.
Thanks for confirming that. Began to think i made some mistake and got this guy a non compatible gpu.
@caqde ; I think it says 2.0 ; http://www.asus.com/Motherboards/Intel_Socket_775/P5Q/
1 x PCI Express 2.0 x16 slot
2 x PCI Express x1 slots
3 x PCI slots
Anyway, i'm stealing the thread here a bit, sorry for that.