Fix Win7 Explorer Favorites cannot be expanded

Today, the author's windows 7 encountered a small problem, the resource manager's "Favorites" can not be expanded, but "library" and "computer" can be. But click on "Favorites" to get to the "Favorites" folder, the shortcuts inside are not lost. I tried to right click on "Favorites" and select "Restore Favorites". The link has no effect. In other words, some reasons have caused Windows 7 Explorer's "Favorites" to fail.
I haven't found the answer for a long time. I used English as a keyword to search. After several links and jumped, I finally found the answer.
Win7
Favorites can't be expanded Solution:
In the forum, some users posted the favorites under Vista and the Explorer's "Favorites" cannot be expanded. The solution to the problem, one of the methods to modify the registry has been tested and valid, share as follows:
1, run regedit
2, expand to HKEY_CLASSES_ROOTlnkfile
3, add a string value: IsShortcut, do not need to fill out String value, press Enter
4. Re-login