I recently got a PowerBook that needed a new LCD because it is cracked. It came with no ram, no battery, and no power cable. I was able to get a power cable and ordered some ram. I put the ram in and tried turning it on but nothing happens. The light on the charger is green so doesn't that mean that the board is good? Do I need a battery in the system for it to start? Also, I do have the right ram. I tried swapping slots and still nothing. Any help would be appreciated!