I haven't read every post, but I went back 6 pages. My Windows XP won't load. After BIOS post I get B&W screen stating Windows did not start successfully. Options are Start Normally, Start in Safe Mode, Last Known Configuration and a couple of other Safe Mode options. Start Normally goes to Windows splash screen, times out and starts BIOS post again - an unending circle of failed boots. If I click any other option, I get a list of drivers, with the last one being: multidisk rdisk partition/WINDOWS/System 32/Drivers/gagp30kx.sys Booting with Windows CD and going to DOS I tried a dir command and a diskpart command, neither seeing the hard drive with the OS on it. Another thing running Windows CD, I hit f6 to load Promise controller drivers and after loading hit Repair. Got a message at the bottom of the screen that said something to the effect scanning or analyzing hard disk and showed the HDD size, but then this process timed out and it went back into the ugly circular boot cycle. Any help would be appreciated. It is a SATA drive, so I haven't gotten a lot of help with local computer repair shops.