====== Short version: ======
 Stop all Explorer.exe instances, delete the user's hidden IconCache.db file, and restart Explorer.


or even better Download this small freeware utility [[http://www.solidpost.com/Telechargement/ReIconCache.exe]] to rebuild the icon cache.

===== Long Version =====
 (There are other ways as well) :

  - Close all Explorer windows that are currently open. 
  - Launch Task Manager using the CTRL+SHIFT+ESC key sequence, or by running taskmgr.exe.
  - In the Process tab, right-click on the Explorer.exe process and select End Process.
  - Click the End process button when asked for confirmation.
  - From the File menu of Task Manager, select New Task (Run…)
  - Type CMD.EXE, and click OK
  - In the Command Prompt window, type the commands one by one and press ENTER after each command :
  - CD /d %userprofile%\AppData\Local
  - DEL IconCache.db /a
  - EXIT
  - In Task Manager, click File, select New Task (Run…)
  - Type EXPLORER.EXE, and click OK.