Thomas, Many times that problem is caused by malware. It's also possible that Active Desktop is enabled. To Disable Active Desktop. Open the Control Panel.
Open Display Properties.
Click the Desktop tab.
Click the Customize Desktop button.
Click the Web tab in the Desktop Items window.
Make sure all checkboxes in this window are un-checked including My Current Homepage.
Restart your computer.
If that doesn't correct the problem go to the link below and under the letter "W"--"Wallpaper - Desktop - Disable Changing" click on "Allow Wallpaper/Background Changes" to download a reg file fix. Save the REG File to your hard disk. Double click it and answer yes to the import prompt.
Recently my desktop background got blocked by a single colour background and I can't change it back. I've tried going into the control panels and desktop backgrounds, however the list there is blocked, I can't click on anything in the list. There is an item om this list I haven't noticed earlier, it's called desktop and has the Internet Explorer Icon (guessing it's some kind of html file, however since I can't rightclick the file or getting any more information about it I havent had any success locating it either). I have also gone into the folder where all the other pre-defined Windows desktop backgrounds are located but can't find the file here either, unless it's is hidden in some kind of way.
If I open my Task Manager and shut down explorer.exe my original desktop background becomes visible again, however without any desktop icons and taskbar processes and icons in the bottom.
Have any of you experienced something like this? Can someone help me out on how to get rid of the things that are overriding my adjustments?
Hope to hear from someone soon. My email address is firstname.lastname@example.org
Thomas Russ Arnestad