Enter an Administrator account after boot, or enter Admin from Safe Mode, and then run a Search on the entire drive, looking for the folder, or a known filename within the folder. The link may be invalid now, but the data may still be there.

Second is to boot into a Linux distro like Mint 17, use the mate-search-tool (available from the Menu) to search for the folder, or a file in it, and also be able to transfer the files from one folder to another.