I've just encountered a weird experience using my Macbook Pro. It happened to me today, whereby, when i turn on my laptop (Using Battery to power up). It was loading at the startup screen where you would be able to see an 'Apple' logo, after a while it kind of tripped off and restarted again. Would it be any possibility that there's hardware faulty to matter? Or is it not stable and i'll have to dl a new firmware?