Hi so I have been using Windows 10 pretty well for a couple of weeks now, but then yesterday the PC was restarting and updating but all of a sudden the electricity went out in my apartment. Now, everytime I start up my desktop, a blue screen comes up and it says something like "unmountable boot volume" and then it restarts and goes into system repair, but has been stuck on "diagnosing your pc" for a hell long time now so I force shut it down. I have tried so many different things, but nothing works. I have even tried to reinstall Windows 10, but it does not work on my hard drive, and at other times it says that my hard drive is "locked." I am really desperate here and I need some help quick because schools are starting and I need to do my work on my desktop!!!