I bought a passport elite a few years ago and recently I transferred some video files to it so my father in law could watch them. When they plugged it into their laptop it was showing up a WD SmartWare with the user manuals ect. my files were nowhere to be found. I have now got the hard drive back and it is doing the same thing as they explained. How do I revert this back and retrieve my files? Also if anyone knows why it happened in the first place to avoid it in future would be good too?