Reinstall MacBook OS X Maverick without original Apple ID

Received an old MacBook from a friend and we have the reinstall disks but the system won’t recognize our new Apple ID (noted from a previous post that it works with the original user’s Apple ID). I don’t have access to that ID. When I enter mine (adding the verification code at the end of the password), I get a “This item is temporarily unavailable. Try again later”. Is there anyway to get around this or remove the original owner’s info from the MacBook so we can start from scratch?