OK, so this problem is relatively complicated. I am trying to fix a friend's Gateway laptop. When attempting to boot it up, it goes to the screen giving options for entering safe mode. Attempting to enter safe mode results in the computer rebooting after failing to successfully load Windows. When attempting to enter safe mode with a command prompt, a list of files scrolls by very quickly and freezes on a file called agpCPQ.sys before eventually restarting. Occasionally these reboots lead to the BSOD.
When booting from the Windows XP CD, the setup makes it to the point that I can attempt a fresh install or repair, but when either option is selected, it freezes on "Examining 76320MB Disk 0 at ID 0 on bus 0 on atapi".
In a nutshell, I can't boot in normal mode, I can't boot in safe mode, I can't reinstall such that I can reformat the hard drive, and I can't repair the installation. Somehow, I need to wipe the computer and start anew; until I can do so, the computer is useless.