Have you tried pressing the F8 key when Windows first begins loading to get to Safe Mode? If you want to boot from your Windows install disc to do a repair, you'll have to make sure you have the BIOS set to boot from your CDROM. Then, if your hard drive is SATA, you'll need to install the SATA/RAID drivers by having them on a floppy in your floppy drive and pressing the F6 key at the beginning of the Windows installation when you see it asked for at the bottom of the screen. Without the SATA drivers, the Windows install disc will not see your hard drive. If you're using an IDE hard drive, no need for a driver, Windows will see it.