well i had mine working off the bat.
It was suggested that you try to install the integrated peripherals one at a time, meaning enabling them one at a time via BIOS, then let windows detect them, then load the appropriate drivers from the discs the mobo came with.
Just a thought.
1st slot-empty
2nd slot-TBSC
3rd slot-empty
4th slot-empty
5th slot-adaptec 2940
6th slot-empty
Regards!