Hi,
Type cmd in the Start/search box, then when it appears in the list above,
right-click cmd.exe and select Run as administrator. Type "sfc /scannow" -
without the quote marks - and hit enter. This will attempt to repair any
corrupt system files. It may take a while.
--
Jane, not plain

64 bit enabled :-)
Batteries not included. Braincell on vacation ;-)
MVP Windows Shell/User
"waweech" <waweech@discussions.microsoft.com> wrote in message
news

02CA29F-1AF2-4D2A-8D20-CB05A94BFFEA@microsoft.com...
>I installed AIM 6.5 on a PC with Windows Vista Ultimate (User Account
>Control
> disabled) and suffered many problems that have been noted by by others
> elsewhere (network center stops working, Windows performance index goes
> blank, etc.). I have unistalled AIM 6.5 and managed to repair several of
> the
> problems. However, my children cannot log on to this PC with their
> standard
> accounts. When they attempt to do so, the screen goes black and they never
> reach their desktops. My wife and I can log on fine with our administrator
> accounts.
>
> I tried System Restore but that did not work. Anyone have any ideas?