Solving Win7 Explorer can't expand Favorites

Q: In my Explorer in Win7, I can't expand "Favorites", but my "Library" and "Computer” ; etc. can be expanded normally. If I click on "Favorites", I can enter its folder and the contents are not lost. I tried to right click on the pop-up menu of the favorites and select "Restore Favorites Connection", which is not solved, solve it.
A: This problem is not difficult, because the registry is damaged, you can modify the registry to solve. Enter regedit.exe in the "Start → Search Box" and then open the registry as an administrator and navigate to "HKEY_CLASSES_ROOT\\lnkfile”. Create a new string value on the right side “lsShortcut”, do not fill in the value, press Enter directly, and then restart the computer to solve the problem that Win7 Explorer can not open the favorites.