Originally Posted by Flavius
I did try the sfc/scannow, but it did not find any errors. I then tried the FixThis download, which allowed me to access WU, but it would not download. It just sat at 0% for about 10 mins before I quit.
I then did a system restore. After about 30 minutes of running system restore, there was no response. I thought it froze up as System Restore has never taken that long, so I powered off in the middle of system restore. Not a great idea. Registry was corrupted. Luckily, I switched the 1st boot device to the CD/DVD ROM in BIOS, and re-installed Vista clean from scratch. Now everything is fine, and the system is up and running. I just hope I don't encounter this issue again.
Thanks for all the help to everyone.