Boot the system without the CD and hit F8 as soon as the initial POST ends
and just as Windows begins to load. If you can get to the boot menu, try
safe mode with command prompt. From there, run rstrui.exe from the
C:\Windows\System32\Repair folder to open the System Restore GUI and try a
date before the upgrade attempt.
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP http://mvp.support.microsoft.com/
Windows help - www.rickrogers.org
"JohnnyPerko" <JohnnyPerko@discussions.microsoft.com> wrote in message
> Installing Vista on top of XP HOme, it hung up and says it encountered an
> internal error and will return me to my orginal Windwos (XP) desktop. It
> doesn't: it keeps going in an endless loop and gets back to the same
> "internal error" message. Any suggestions how to save my original Windows
> desktop & data?
> Thank you!