Hello everyone. I've got a used 17" 4.1 2008 Macbook Pro from eBay and the Screen won't turn on. Tried PRAM, SMC Reset, Nothing.. The Keyboard lighting doesn't work as well, either the DVI Output. I'm wondering if this is an issue due to the fact I'm using only the magsafe adapter as a power source as there is no battery available. Fans, hdd, Power LED, working fine..