1. Close and save anything that you are working on. This command will kill explorer and restart the computer when completed.
2. Open a command prompt in Windows 7 or Windows 8.
3. In the command prompt, Copy and paste each command line below exactly as is one at a time and press enter after each command.
WARNING: The last command will restart the computer, so be sure to close and save anything that you are working on first.
- ie4uinit.exe -ClearIconCache
- taskkill /IM explorer.exe /F
- DEL "%localappdata%\IconCache.db" /A
- shutdown /r /f /t 00
4. The
IconCache.db file has now been rebuilt.
5. If the icons are still not displaying properly, then download and merge the
ICO option in this tutorial for
Windows 7 or
Windows 8 to restore the default associations of .ico (icon) files.
source: http://www.sevenforums.com/tutorials/49819-icon-cache-rebuild.html