1. If you deleted files on computer, first check the recycle bin and backup. Or you could use recycle bin recovery software to recover files from emptied recycle bin.

2. If you deleted files from portable devices such as USB flash drive, SD card, camera or others, there are many recovery software … Read more

There are several recovery software to solve this problem. Recuva is always my first choice, but its preview is not very good. Here you could also try RePicvid Free Photo Recovery (for photo/video/audio files), which offers free scanning and allows you to preview files.