It is possible to recover deleted files if you haven’t saved much to the same drive that contains the deleted files. When you delete a file in Windows, it isn’t actually deleted – the data is still stored on the hard drive.
Since the information stored in the files hasn’t been removed from the hard drive, it may still be possible to retrieve the data from those lost files. This post explains how to use a tool called Restoration to recover deleted files, not only from a hard drive but other storage media such as memory cards as well.