xp pro won’t boot

I am unable to boot up in win xp pro. I tried to safe boot and it fails also. When trying to enter safe boot the screen stops and the last line displayed is for the Agp440.sys file.

I am running a ntfs file system. The operating system was installed with a clean install. Seems like all I have is problems since installing xp.

Any ideas as to how to repair without reinstalling.

Thanks,
John