I have recently installed Windows XP on my Macbook with BootCamp, success. The problem is, when I hold option at startup, a big lock comes up asking a password. I enter every single password I know, such as mine and the administrators. Remember when I had my startup problem the other day? I took it to my school to get checked, and it seems the school made a SECRET admin password because when the guy helped me choose the different hard-drives at the startup holding option, he used a SECRET password I didn't know about! When I don't hold option at startup, that folder with the question mark comes up again after 20 seconds of startup. How do I find out what this password is so I can use my computer?? By the way, the school Macbook help never tells you anything This is probably a firmware password. I CANNOT use my computer unless I have this one password.