P4I875P Boot Problem with SATA drives

I have a Dragon 2 Platinum and whenever I attach my pair of Seagate
Barracuda 120G drives to either SATA1/2 or SATA3/4, the mobo hangs at
boot at the "Verify DMI Pool Data..." although I do get "success".

Oddly, it will sometimes boot from the floppy at this point, but not
from the CD nor from ATA3/4 I have setup as a Raid 0.

Without the SATA drives connected, the MOBO boots from ATA3/4 without
a problem.

I have Winchester 200G drives attached to ATA3/4, a SONY DVD R/W
attached to ATA1 and a floppy drive.

Any pointers?

Thanks,
Charles