Previous versions of Windows had a feature in “TweakUI” to rebuild the icon cache. Since Vista doesn’t have TweakUI, you need to find other ways to rebuild the icon cache.

Make sure you have Command Prompt and Task Manager open.

Go to your local settings folder, such as:

C:\Users\YourName\AppData\Local>

Type “attrib -h iconcache.db” (without quotes)

Use Task Manager to kill Explorer.exe

Delete the IconCache.db file.

Type “explorer” to re-load Explorer.

Windows should re-build the icon cache.

Another method:

Delete the IconCache.db file as mentioned above, but instead of killing Explorer, instead switch to 16-bit color mode, and then back to 32-bit color mode.