AnswerAt first you should check your Recycle Bin. If you find deleted files there:
# Left click on the file you have deleted and want to restore.
# right click on it and click restore
# file is recovered.
Otherwise you should use a special unerase application.
Some such tools can work directly with different media types: hard drives, memory sticks, digital camera memory cards etc. The program has a preview feature that supports quite a number of popular formats, including Microsoft Office documents, OpenOffice documents, images, audio files, archived files etc. Thus you can make sure that the files in question are recoverable without registering the program.