Delete this file if present:
C:\WINDOWS\desktop.html
------------------------
Making a .reg file
Open notepad and copy and paste the text in the quotebox below in it:
Code:
[b]REGEDIT4
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop]
"NoAddingComponents"=-
"NoEditingComponents"=-
[/b]
Name the file as Fix.reg
Change the "Save As" type to "All Files" and save it on the desktop.
It should look like this: ![[IMG]](http://i10.photobucket.com/albums/a117/justinlutzfl/reggif.jpg)
Double-click on it and when it asks you if you want to merge the contents to the registry, click yes/ok.
Try changing the desktop. If it doesn't work try rebooting then try again