I have a 250 GB Western Digital WD2500 hardrive. It is serial ATA connected to a PCI Controller card (Adaptec 1205SA). I am using it as a second slave drive. It worked fine before I reformatted XP. Now when I go to device mgr. it has a yellow question mark next to it. I have tried to update, install, rollback, and disable drivers. Nothing works. It says drivers for this device were not installed "Code 28". As far as I know hardrives don't require drivers, do they??? I updated the driver to my PCI Controller card, but it still doesn't work. I have resetaed the controller and the serial ATA cable on both ends, and of course rebooted many, many times. I also think I have all XP updates as well as SP2 installed. It just won't recognize this HDD like it did before as a HDD. The latest attempt I made was to buy a brand new ATA controller - exact same kind (with serial cable of course) and install that. Still no luck. Please any suggestions/thoughts would be SO greatly appreciated. I have my entire music library on this HDD. Please help me with ideas. Thanks in advance. Oh ya, this is a kick ass site by the way!