Icon not displayed correctly? Rebuild the icon cache.

This will work for Windows Vista, 7 or 8.

This is the default location of icon cache database
C:\Users\User-Name\AppData\Local\IconCache.db

Fire up cmd as an Administrator and give the following commands by turn:

ie4uinit.exe -ClearIconCache
taskkill /IM explorer.exe /F
DEL "%localappdata%\IconCache.db" /A
shutdown /r /f /t 00

This will force the IconCache.db to rebuild.