In any case, not fully.
But you can try a few of the data recovery programs mentioned in http://forums.cnet.com/7723-7588_102-354911/lost-and-found-or-the-storage-forum-sticky/?tag=contentBody;threadListing
Be sure you run them on CLONE of that hard disk. Not on the original!
Getting them back from your backup is recommended above data recovery.,
Can I recover my files after restoring my hard drive to the factory image?