I have had a similar problem, but with an external CRrom and sp2. Finds the drive enclosure and refuses to recognize the drive. I just gave up! I have recently reformatted my hd and will pull it off the shelve and let you know what happens. If I can offer any help I will repost.
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.