At this point your best option may be to restore your backup and start
again.
The safe mode logon of the "Administrator" account only works if there are
no other administrator accounts. See the following link.
http://blogs.msdn.com/windowsvistase...security-.aspx
--
Kerry Brown
MS-MVP Windows - Shell/User
www.vistahelp.ca
"DT" <> wrote in message
news:F1D50D81-13EE-458B-AEA7-...
>I upgraded my Windows XP Pro workstatoin to Vista. I ws never prompted to
> add a user or change a password. When Vista started for the first time I
> was
> prompted to logon as the original admin user I had created when I first
> installed XP. This user had no password. Apparently, Vista does not
> allow a
> blank password and therefore will not allow me access to my own PC. Of
> course the local administrator account is disabled, makes sense? - sore
> and
> bloody..
>
> Those who say that you can logon to the administrator account in Safe Mode
> a
> flat out wrong.
>
> Does anyone know of a way to enable the administrator account via the
> registry?