In an effort to have the virtual desktops that I became accustom to in XP I decided to install the latest non-beta release (100.65) of NVIDIA drivers. Followed all the rules for the install and selected reboot now at the end and WaLah!! - NO MORE COMPUTER!! As in boot/reboot/reboot. Finally came to the boot select mode window where I selected the Safe Mode - again reboot to same window. Even tried booting to a command mode no luck.

Finally booted from Vista DVD and selected the repair. Selected return to a check point. Again boot to boot mode selection window - Again tried all the options resulting in a reboot for each. Again booted from DVD and selected the repair. This time it spent a little more time analyzing the system and again came back to reverting back to another check point. Selected and reboot.

Finally recovered my Vista system. Not sure what happened here, but I won't be updating my video drivers from NVIDIA in the near future.