I would boot gparted from a usb or live dvd https://gparted.org/livecd.php and take a look at the health and partitions of the hard drive. I would also do a chkdsk using hirens boot disk since we are talking about the windoz 7 not booting.
You could just add a new user. #useradd -m username the -m will create a folder in the home directory.
a alternate command to add a user and pointing to the users home directory is # adduser –home /home/anydirectory username