A little trouble with my laptop

After installing the latest updates last night, the computer is now in a state of infinite rebooting. When starting up, I see the familiar "configuring updates stage 3 of 3 0% complete do not turn off computer" but it never completes and just when you would expect your logon screen to appear, it says, shutting down and the process repeats. It does this when booting in last known good, safe mode, etc. I'm pretty sure the fix is to use the Windows Vista installation DVD to boot and you should get an option to repair and restore from a previous system state restore point. I'll need to get the service desk at the office to give me a copy of Windows Vista Business so I can do that. I'm not sure if I will want to rebuild the computer after this failure or not.