I am unable to start my Sony Vaio XP laptop and when I start-up in safe mode, the computer hangs on Agp440.sys. MSFT says to disable the Agp440.sys by booting from the CD, however, when I try to boot from the CD, it goes through the normal loading process from the CD but freezes at the blue Windows set-up screen. In the white bar across the bottom of the screen it says 'Setup is Starting Windows', but nothing happens...Any ideas or suggestions of other ways to boot from a CD or other ways to disable the Agp440.sys?