Unable to change wallpaper in Windows 7

In case you are unable to change Wallpaper, please refer to the following link under the heading

Method 2: Corrupted TranscodedWallpaper.jpg

And it would resolve the issue.

1.    Copy the following text, and then click Start and in the search box copy paste this text :

%USERPROFILE%\AppData\Roaming\Microsoft\Windows\Themes\

2.    Right-click the file that is named TranscodedWallpaper.jpg and then Rename

3.    Rename the file to TranscodedWallpaper.old, (change .jpg to .old) and then click Yes when prompted

4.    If slideshow.ini listed, double-click this file. Slideshow.ini should open with Notepad. Select all the text in slideshow.ini if any exists and press Delete on the keyboard, and then click File and Save to save the changes.

5.    Close Notepad and close the Windows Explorer window and browse to the picture that will be set as the background image

6.    Try to apply a background picture again