You could try this:
The Windows desktop may stop updating correctly after a Windows Vista-based
computer has been running for an extended period of time:
http://support.microsoft.com/?kbid=932406
"Silverlining" <Silverlining@discussions.microsoft.com> wrote in message
news:C07638D2-C45D-4877-BAA6-FB5D067264F5@microsoft.com...
> Hi...I could use help in removing a small black box surrounded by a thin
> blue
> frame on the right top corner of my screen. It's in front of everything
> and
> can't be moved. It just recently showed up on my new Microsoft Vista Home
> Premium program.
>
> Much appreciation for any help.
>