I was in the midst of what seemed to be a successful upgrade from Vista Ultimate to 7 Ultimate when there was a brief blackout. The upgrade failed and Windows reverted back to Vista. Now Vista is very slow to boot, has problems waking back-up from inactivity and quickly loses it's wireless connection.

The wake-up problem manifests itself as the mouse is clearly shown on a black screen but I have no access to the Desktop or Taskbar or Explorer. Even Alt-Ctrl-Delete doesn't seem to work. No task menu, no reboot. Hitting the reset button reboots the machine with the usual Black Screen warnings offering Safe Mode.

I tried to do a system restore to a point before the upgrade. That didn't seem to work.

My guess is that my system is a mutant with parts of Vista and parts of 7 crashing each other. I would like avoid a clean install if at all possible to avoid reinstalling other software.

What should I try now?

My thoughts are:

• My a system back-up to lock the computer in place
• Trying a second 7 upgrade
• If that appears to be working make another back-up
• If not reload back-up and try a repairing Vista from DVD.
• If that appears to work make another back-up, let system stablize about a week then try 7 install again
• If that doesn't work are there any other options to try before settling for a clean install?

Another complication, I am doing this by "remote control". I'm traveling with my job and I'll be talking my son through it over the phone. (Kind of like the landing the 747 cliche from all the 70's adventure shows!) So is there a way of simplifying the steps?

Thanks Ted