Solved Red Border

Hi everybody. This is my first post and I thought this would be the best place to ask for help. I can't find a solution anywhere else. Here's my problem:

Yesterday I noticed that there is a red border surrounding my desktop. I didn't pay much attention to it because I wasn't using to the computer for anything at the moment except for downloading a torrent.
So this morning I woke up the computer and the border was still there, and that's when I realized that my desktop wasn't working. None of the icons work, or the Vista side folder bar thing(?).
So in summary, I strangely have this red border around my desktop, that disables my desktop.
Any help would be greatly appreciated.

Thanks,
CJ.

I figured it out! Somehow my desktop background became a screenshot located in appdata/roaming/... And then my desktop icons hidden/disabled. I don't know how this happened because i know that nobody used my computer. Strange...

That shouldn't happen on its own, unless you're using a 3rd party theme program that might have a glitch, or some malware was having a go at your computer. Is your anti-virus up to date? I would download and run MalwareBytes, just for some added security.