I have a similar problem. I wanted to move my videos so I right clicked it and went to Cut. I then renamed the folder, but was not able to paste. I am confident that the files are still on the hard drive, as the data size used has not decreased but I cannot see the files.
I have tried restarting the hard drive, but no luck.
I have tried looking through all the folders on the c\ drive of the drive, but cannot find any of my videos.