I have a laptop with XP Prof OS & four partitions in NTFS format (C,D,E & F drives). Six months back I changed the OS into Windows 7 (Not in quick format mode). But, the OS is not functining properly. So, again I changed the OS to XP Prof. in normal formating mode. For OS I used "C" drive only. Remaining drives are not formatted. I kept all my video's & photos in "F" drive. Now, Whatever the video files are there in previous XP Prof. OS(Useing XP OS is the same CD with key before & present)those are not playing. Photos are also not opening. It says, data is over written(video's (avi format)/JPEG format photos). I used Stellar phonics data recovery tool & few other data recovery softwares. I am able to recover all those video's & photes with the name and date which I gave, But, those are not opening. All my efforts are in vain. How can I restore those videos again?