I believe you MOBO should have SATA drivers, at least mine were on a Floppy, and they have to be installed, I don't believe Windows has SATA drivers. Ran into to the same problem with a Seagate SATA. The OS is on an ATA drive and the SATA is a back up. Had to make a couple of changes in the BIOS for both the ATA and SATA, don't remember what they were right now but remember they didn't seem to make sense, i.e., just enabling the SATA didn't work because of the ATA drive. If you have an ATA drive as well, suggest you start sysetmatically changing the ATA, SATA, and RAID settings in the BIOS. Someone might know exactly what these should be.