How to Undelete Files - Step 1
It is important that stop writing operations on your disk which the deleted files were originally present. When you deleted a file from your hard disk or removable dis, it is not really wiped, instead, the file entry was simply removed from the folder tree. But the space of deleted file was marked as "usable" by the file system, so any new files written to the same disk may potentially write over the deleted file, and make it unrecoverable.
The "undelete files" first step: stop writing new files to the disk of the deleted files, stop installing new applications to the disk, and if possible, do not reboot your computer before restoration of your deleted files. Stop or reduce internet browsing and web browser temporary files may overwrite the deleted files also.