MacBook Pro says I need Administrator to log in?
I just bought a MacBook Pro from online and when I got the laptop from the guy, he said the account didn't have a password but I could change it if I wanted to. I changed the password and now it won't let me do anything in the settings or open some apps because I need the administrator to sign in. I tried using the password I set and using no password, no luck. I don't know what the issue would be.