Question : Problem: locked out of vista uac

when i click on ad or remove user accounts nothing happens.\
I can't even do a restore. and i can't save my programs when I try to compile them.
I try to click on uac control and nothing happen.
the message that i get is:
"The service cannont be started, either because it is disabled or because it has no device driver associated with it."
I was fulling with administrative controls,and i locked them somehow and now i cant' undo them.
help...

Answer : Problem: locked out of vista uac

I'm beginning to think this is the only option left:  There was an XP Repair option available on the WinXP installation CD to reinstall XP over itself, which would in most cases not disturb your data or installed programs.  Vista has an option like this also, described here:

http://vistasupport.mvps.org/repair_a_vista_installation_using_the_upgrade_option_of_the_vista_dvd.htm

The difference between XP repair and Vista repair is that you must be able to boot into Vista in order to repair it, while the XP repair option was chosen in XP's Recovery Console, which meant that XP didn't necessarily have to be still bootable.