My mbp has been on the fritz and I stopped using it for a while..... but now I'd like to get it working again. First it won't boot past the Apple logo and the spinning indicator. I have no idea why. The last time I used it, I shut it down and the next time I turned it on, it would sit at the logo. This time there's a twist though. The screen is incredibly dark. So dark I can bare see the Apple. I've tried the brightness shortcuts but I'm not getting anything. Any help would be greatly appreciated here. Edit: Got the hard drive to work and now everything is functioning fine EXCEPT for the backlight. It isn't receiving any power and that is why everything is so dark. Does anyone know how much voltage is required to power the backlight?