I bought a computer off amazon. Upon arrival I turned it on and it went to a screen saying default user0. Your account had been disabled please see your system administrator. I can't put in a password because I never set one.
If this is a brand new machine, my best advice would be to return it and get a replacement.
If the machine has been previously used, you could try running a Factory Reset and then set the account up again. See the sub-heading 'Recovery when Windows 10 does not start correctly' on the following link.