I have a 13" macbook pro, it suddenly shut down and now it won't startup again. (There's no noise and no light) the battery is charged and the indicator light is orange but when I push the start button the indicator light turns green (and it still doesn't turn on). The battery is charged at least up to 50% when it shut down and the lights on the side indicate its still around that percentage. I slept on it and charged it again but it still won't turn on. Hope someone can help me.