1.     Open the Task Manager (Shift+Ctrl+ESC)
 2.    In the Process tab, right-click on the Explorer.exe process and select End Process.
 3.    Open the file picker via "File > New Task (Run)" and click the Browse button.
 4.    Type or Paste %USERPROFILE%\AppData\Local in the File name field (AppData is a hidden folder).
 5.    Select the IconCache.db file and use "Delete" in the right-click context menu to delete the file.
 6.    After the IconCache.db file has been deleted, start a new explorer.exe process via "File > New Task" to get the desktop and Taskbar back. 

      The IconCache.db file is a hidden file, so make sure that you can see hidden files. 

hello hydking..... Did you try to change this icon via the right-click context menu and open the Properties? Try to rebuild the Windows icon cache. 1. Open the Task Manager (Shift+Ctrl+ESC) 2. In the Process tab, right-click on the Explorer.exe process and select End Process. 3. Open the file picker via "File > New Task (Run)" and click the Browse button. 4. Type or Paste %USERPROFILE%\AppData\Local in the File name field (AppData is a hidden folder). 5. Select the IconCache.db file and use "Delete" in the right-click context menu to delete the file. 6. After the IconCache.db file has been deleted, start a new explorer.exe process via "File > New Task" to get the desktop and Taskbar back. The IconCache.db file is a hidden file, so make sure that you can see hidden files. * [http://kb.mozillazine.org/Show_hidden_files_and_folders http://kb.mozillazine.org/Show_hidden_files_and_folders]