Harry, we´re trying to gently push things forward, while you suggest we use the battering ram

However, Harry´s way will work, too. But since the FOUND.000 folder has already been created, the problem with the file system should be corrected by now. Plus, you should see that specific folder in Windows anyway. Just delete it.
As for the future, I strongly recommend to keep Harrys advice in mind. Careless unplugging has left me with the same problem you experience now once, plus two times when I had to reformat the whole thing because nothing has worked anymore. (And that was not just for a couple of books

)