Password problem after upgrade.

So I attempted to upgrade to 15.10 from 14.something. Now every time I try to boot I get stuck after the grub dual boot menu. It asks for a login.

The lines I get is

Ubuntu 15.10 Beatrice tty1
Beatrice login:
Password:

Regardless of what useame or password I input, I just get told 'Login Incorrect'

I have tried to use recovery mode, but I still get asked to login. I was wondering if anyone here knew what login it is asking for, and a way to recover the password for it?