The Favorites folder in Windows 7 and 8 Explorers is a quick way to organize and access commonly used folders. By default, there are only three folders which include Desktop, Downloads and Recent Places. Here’s how to manually add any other folder you want to Favorites.
First, open the folder you want to pin to your Favorites menu in Windows 7.
Right click on the Favorites menu and select Add Current Location to Favorites.
Now, it will show the folder you selected in the Windows 7 Favorites menu.
At any time if you want to remove the folder from favorites menu, simply right click on it and select Remove.
This tip works in Windows 8 too.