I think pretty Bad, sadly. Windows 10 always tried to do CHKDSK on start, but it didn't work well. Now I have Win 7 on my 2nd Hdd. I thought I had stored everything away but I forgot about my notes. So I made a fast formating. The crashed Hdd wasn't even recognized by Win 7 before that. But yes, maybe I should have a second look with some free Software.