try re-installing your video drivers

"microsvc" <microsvc@discussions.microsoft.com> wrote in message
news:9CEDCD0D-D183-44A4-BDB1-C9F5E999DCB6@microsoft.com...
> I needed to reboot (what a shock) and when Vista booted, the screen was on
> Windows Classic apearance. I changed my theme back to what It was and
> theres
> NO AERO, no matter what theme I choose. The Quick Launch Aero button is
> also
> gone. Any suggestions?