Ok, what type of hard drive are you attempting to boot from (SATA or IDE),

It is not the HD, it is the chipset. If you can read in
.net she has
changed from Asus P4S533 with SIS to the Gigabyte GA-8IK1100 with
intel. Without a repair installation of XP and the installation of the
intel chipsetdriver the computer will not boot.

Udo Kammer