Not long ago I upgraded my OS to Windows 7 64-bit. Why use the 64-bit version? Because I upgraded my notebook memory to 4GB. And the 32-bit OS version cannot use 4GB of memory effectively. As soon as I upgraded to Windows 7 64-bit, it went smoothly and fast. But I got a strange error — there were some missing icons. For example the Skype icon and Mozilla Thunderbird icon.
See the image below:

I tried to reinstall Skype and Thunderbird but still the icon was not showing. To fix this you need to clear the Windows 7 icon cache. Follow the steps below to repair missing icons in Windows 7:
1. Kill explorer.exe: Open task manager (Ctrl + Alt + Del then choose Start Task Manager), find explorer.exe then press End Process.
2. Run command prompt: press Windows + R then type cmd
3. Go to C:Users<your username>AppDataLocal:
cd C:Users<your username>AppDataLocal
4. Delete IconCache.db:
del IconCache.db
5. Start Explorer.exe: press Windows + R then type explorer.exe
6. Voila! Now the Skype and Thunderbird icons are back.
I hope that this article could help you. Thanks and please come back again.
