Desktop Background is stuck on a solid color

[Feroaffer]

Here's the story:

When I try and change the background to an image it just stays as the solid color, I use to be able to change the background but I accidently set it as a solid color and I can't change it.

I've tried Ease of access method

and I've tried to delete a corrupt transcodedwallpaper file

 

[Bongo]

Welcome to the Seven Forums
What version of Windows 7 are you using, and what color is the background stuck on?
Try Option 2 of this tutorial http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html it will not harm any data or programs you have installed it will try to repair any corrupt system files.
This would be my second suggestion http://www.sevenforums.com/tutorials/3413-repair-install.html
Jerry