某日win7圖示顯示不正常，不顯示應用程式內嵌的圖示，卻顯示系統預設的沒有被識別的檔案型別的圖示，試了很多方法都不行，
最後找到一種方法輕鬆解決，即清除圖示快取。
To Manually Rebuild the Icon Cache using the Command Prompt
1. Close and save anything that you are working on. This command will kill explorer and restart the computer when completed.
2. Open the Start Menu, and type cmd in the search box and press enter.
3. In the command prompt, Copy and Paste each command line below and press enter after each command.
- taskkill /IM explorer.exe /F
- CD /d %userprofile%/AppData/Local
- DEL IconCache.db /a
- shutdown /r
4. The IconCache.db file has now been rebuilt.