[Baron Munchausen]

Atrocities said:
I regret to say that it was not the new Nvidia drivers that caused my PC to crash upon restart, but unfortunetly it was AVG. After hours of troubleshooting, I finally decided to try and remove AVG to see if my PC would boot. Once removed, via safe mode, the PC booted. I restarted the PC many times to ensure that it was properly working before reinstalling AVG. Once reinstalled the PC began to crash again upon restart. I guess AVG does not like HP/XP/AMD computers. Looks like I am going to have to buy Nortan 2006.

As Fyron says, you should visit the forums and ask for help. It's likely a config problem in Windows XP that they can tell you how to fix. Or it might be something particular to HP computers, but even that could still be fixable.