Fixed favorites in Win7 Explorer could not 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.
Search for a long time did not find the answer, I used English as a keyword to search, after several links to jump, finally found the answer.
Win7 Favorites can not be unfolded solution:
In the forum, there are netizens posted a solution to the problem that Vista's favorites are emptied and the Explorer's "Favorites" cannot be expanded, among them A method to modify the registry has been tested and validated as follows:
1, run regedit
2, expand to HKEY_CLASSES_ROOTlnkfile
3, add a string value: IsShortcut, do not need to fill in the string value, press Enter
4, re-login