Windows XP hangs at loading agp440.sys!?

1. Remove all USB devices except of mouse and keyboards, you can disable USB ports from BIOS as well. (Or yank out USB device when the boot is stopping at loading agp440.sys!?)
2. Trying to boot into Safe Mode.
3. Execute "chkdsk /R" and then reboot.
4. Windows will do disk check and recovery your system.
5. Done.

Reference: http://marc-bourassa.com/2005/04/24/agp440sys-and-dead-xp-system

Or

In my case, everything works fine after I remove CD-ROM drive.