Hello, have you tried using a data recovery program to scan the drive? With the help of Google you can find several options. If you are trying to recover your files don’t run the write ceros option, since this will delete all your files.
From references I have seen thus far, try to avoid running any programs on the drive which might alter data until AFTER saving the drive data with an appropriate program. Probably the Acronis software, which can be downloaded through Western Digital, might be the safest bet. (But honestly I have the same issues, and I am new at this. That is as much as I think that I might know.)