Force remove PC from non-existent domain

I have some donated computers at our NFP group (http://www.hofffoundation.org). I was able to reset the local admin on each machine, but each system still belongs to a non-existent domain. The local admin does not have privileges to remove from domain. How would you suggest I remove these systems from a non-existent domain...not sure how to elevate local admin to be able to do this.
Thank you,
JohnD
LVL 1
John DarbyPMAsked:
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Wayne88Commented:
You should restore the Windows to factory if possible.  There should be a recovery partition to restore to factory if it's a branded PC.  This is best!

If you still want to just get off the domain then login using local admin account and you should be able to join the PC to a workgroup then you will be off the domain.

Click Start and click Control Panel > System > Computer Name tab or Advanced System Settings >  hit the Change button > select Workgroup and type in the new workgroup name (or just use Workgroup as the name) > click OK > restart the computer.

workgroup7.jpg
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efrimpolCommented:
I agree. Factory reset. I do that all computers I donate.
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Dean ChafeeIT/InfoSec ManagerCommented:
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noxchoGlobal Support CoordinatorCommented:
You could do it via command: netdom remove computername /domain:domainname
But I agree, rolling back the machine to factory settings is more effective.
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John DarbyPMAuthor Commented:
Thank you all; the sysprep will be a good solution since most of these systems don't have the utility partition for factory reset
Thanks!
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Wayne88Commented:
Sure Sysrep is a good solution but a few of us provided an accurate answer to the initial question on "how to get the computer off the domain".  That's what you asked and that's what we answered.  In the future it's probably best to split the points for everyone. Cheers!
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John DarbyPMAuthor Commented:
Hi Wayne, aplogies, I should have spread out the love. Sorry I failed you and others on the points :(
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Wayne88Commented:
It's not a problem John.  Just a thought.  Peace!
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