Hi, this is probably a repeat but I was wondering if anyone can tell me the
best solution.

After upgrading windowsXPhome SP2 to Vista Premium Upgrade I have been
getting error after error, total dumps with the blue screen and user
switcher errors.

I am prepared to do another installation (backing up etc), should I
reinstall Vista (if that is an option on the CD) or should I do a total
reformat, install XP, then do the Vista Upgrade?

thanks