So, I have recently put mac OS onto this macbook pro that I have, because it didn't have an OS on it. Someone had removed it (for some reason). So, I hit command+option+r to do an internet recovery, and that seemed to work. Then, after picking the language and the country, it brought me to a screen where I needed to create a password and account name. This macbook isn't for me, So I turned it off to wait until the person got here. However, now when I turn it on, it just sits on the apple logo screen with a black bar under it that isn't doing anything. What should I do?