Admin rights to User account on Windows 7 computer

hi - i am perplexed by this problem.  please read as this is not a simple as it appears to be.

i changed the network configuration on the windows 7 computer, removed the computer from the domain and logged into the computer in an attempt to re-add the machine.  We have a GPO that strips all local admins (yes i forgot) rights to every computer and the account i am using is essentially a "guest" account.  is there anyway possible to add my current account to the administrators group?  

all efforts right now result in access denied.  

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NinjaStyle82Systems AdministratorCommented:
I suggest using this:

This includes that tool and is a pretty good thing to add to the kit:

you can use it to re-enable the built in admin account.

It is offline so you boot to it outside of Windows.

Might be worth trying Administrator with a blank password also.

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johnkesoglouAuthor Commented:
Ninja - forgot to mention that this is a VM not a physical computer
NinjaStyle82Systems AdministratorCommented:
That's ok, it will still work, boot the vm to the ubcd and use that utility to get your admin account back up.
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JohnBusiness Consultant (Owner)Commented:
Reconnect to a Domain using Change Workgroup and provide domain admin credentials. Now make a new local user name and make it a member of the local groups.
johnkesoglouAuthor Commented:

cant add to domain as the selection is grayed out
NinjaStyle82Systems AdministratorCommented:
that's because you aren't an admin. :)
JohnBusiness Consultant (Owner)Commented:
There are a number of way to reset the administrator userid by booting from CD / USB - some offered above. Have you tried them?

I also suggest you ditch the GPO that removes local userids. I never needed such a policy.
johnkesoglouAuthor Commented:
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Windows 7

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