Hi Samora,
· Have you made any recent changes on the computer prior to this issue?
I would suggest you to follow the methods and check if it works.
Method 1: Browse the "My Documents" folder in your user profile:
C:\Users\<User Name>\My Documents
Right click on it and click the Location Tab and click Restore Default Location.
For reference:
http://windows.microsoft.com/en-US/windows7/Redirect-a-folder-to-a-new-location
Method 2: If that fails then refer the article.
http://support.microsoft.com/kb/937624
Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully.
For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following link.
http://windows.microsoft.com/en-US/windows7/Back-up-the-registry