How to rebuild icon cache?
This issue can occur by corrupted icon cache. To fix the issue, please rebuild icon cache.
1. Click the 
Start button, and click 
Computer .
2. On the 
Tool bar, click 
Organize and choose 
Folder and Search Options .
3. Click the 
View tab, and check to select the 
Show hidden files and folders option , and click 
OK .
4. Then, enter the following directory:
%USERPROFILE%\AppData\Local
5. Find the 
IconCache.db file, and rename it as 
IconCache.db.old.
6. Close the window, and restart the computer.
See also:
Icon cache gets corrupted
Source: 
Link Removed