Hi,
Just done a quick google on your problem, and lots are having a merry go round
Is your mobo on the compatibility list?
Another thing cropping up,
Cons: The BIOS requires that you enter a space to bypass the RAID management screen EVERY TIME YOU BOOT. So, forget unattended restart (e.g. don't plan on using this for a home NAS box!). Furthermore, although all other BIOS screens are accessible from a USB keyboard, Promise BIOS ignores USB input. So, go find a special, PS/2 keyboard just to boot this box.
Regards