Also, StopZilla, Malewarebytes, and Webroot all removed the the virus. They have been run since and none detect any other viruses or issues. Webroot is the only one running now so it is not the antivirus program that is doing this (webroot is the one i have had for years and it hasn't changed).
Can't change it to any other solid color either.
I have Windows 7 Home Premium 32 bit. It is activated and I have had it for 18 months now. This is the first time I have had a problem with it. Nothing pops up saying there is a problem with the background or Windows when I try to change the background.
I have tried everything from the other threads on the site on this subject as well