Check out the gigabyte website, tehre is a new AHCI BIOS for the board. F6c2009/04/24 beta BIOS Update Intel AHCI ROM GIGABYTE - Support&Download - Motherboard - BIOS - GA-EX38-DS4 F6c 2009/04/24 beta BIOS - Update Intel AHCI ROM Let us know if this fixes it, I have the same mobo and...