In news1D3012B-3AFB-4509-B012-9B3F91B2E10F@microsoft.com,
IKE <IKE@discussions.microsoft.com> typed:
> Is there a way to change the computer name and change from a domain
> back to a workgroup in windows registry???

No.
>
> When my computer was set up for a workgroup, I had admin rights. I
> changed the computer name and changed it to a domain, and now I can
> no longer access the computer as an adminstrator. I can only access
> it through a power user account that didn't seem to change.

This doesn't make any sense. If you were able to join the domain, you
must've done this with an account that had admin rights, and that account
should still be available with the same password you used then. What happens
when you try to use the built-in administrator account now?

You can also log in as domain admin (or equivalent) and grant your account
local admin rights - I presume this is now a domain login you wish to use,
right?