Hello! I am planning on purchasing a macbook pro from a stranger and I want to ask you a couple of questions. 1. When does the international warranty start for a macbook? When it is first turned on or when it is purchased? I have read and heard many conflicting answers 2. When I receive the macbook i will have the option to check it for a few minutes before i pay (courier policy). What should i look for? I mean, i want to do a full diagnosis, so to speak. Other than battery cycles, what else do i need to do to make absolutely sure it's everything it's supposed to be? I mean, to make sure that the configuration is as stated, that there is no damage or errors etc. Thank you very much!