I am locked out of my computer (macbook air) I just got it back from the apple store and they reset it. I put in a new password, and now it doesnt let me log in anymore. Command R doesnt work, all i hear is a sound, but nothing happens.

Question

I just got it back from the apple store and they reset it (becuase it kept shutting down and not turning back on).
I put in a new password because i needed to start over from factory settings, but now it doesnt let me log in anymore. (I don't know if this is because it doesnt accpet my password, or I forgot my password in less than 5 minutes, or because when i typed in my new password, i typed it in wrong twice)
Command R doesnt work, all i hear is a sound, but nothing happens.

Answer 1

What I don't understand is why it is rejecting a password I am creating.
Perhaps the password you are creating is too short, or has characters that are not allowed, or is not secure enough because it is a word in a dictionary.
FileVault may have standards for what it considers an acceptable password. If the password is part of the 128-bit encryption scheme, it might have to be 16 characters, for example. (Don't know if that is true, but it's a possibility.) Check your documentation for password requirements.