Free Windows tool No. 4: Recuva
File undelete has been a mainstay PC utility since DOS. But there’s never been an undeleter better than Recuva (pronounced “recover”): fast, thorough, and free. When you throw out the Windows Recycle Bin trash, the files aren’t destroyed; rather the space they occupy is earmarked for new data. Undelete routines scan the flotsam and jetsam and put the pieces back together. As long as you haven’t added new data to a drive, undelete (almost) always works; and even if you’ve added some data, there’s a good chance you can get most of the deleted stuff back. Recuva can also be used to undelete data on a USB drive, an SD card (see screen shot), even an MP3 player.