Try system restore.

--
Jim
"Chappie-Oz" <Chappie-Oz@discussions.microsoft.com> wrote in message
news:1934C75D-7FCD-420E-B2AB-18E186F962BC@microsoft.com...[color=blue]
>I installed a trial version of a 3D aquarium (Visa enabled they say). I had
> to type in a password to start it. Decided not to buy it and uninstalled
> through the control panel. Now the Vista screen saver will not start when
> it
> is supposed to. I have checked the power options and neither the screen
> nor
> the hard disk are set to turn off; it is still on the setup of Balanced.
> I have been told that the registry may have lost the Vista screensaver
> command.
> How do I get this back without doing a reinstall?
>
> Chappie[/color]