I purchased a used white macbook for $60. I don't know the history of the macbook. The macbook power on, the white power light on the right side stay on when plugged into the wall socket. The battery needs to be replaced. I can hear the fans spinning. There is no video or no chime. I plugged an external vga monitor to the macbook, nothing came on the screen. Can the macbook be saved? How should I go about trouble shooting the macbook? Does the GPU requires reballing? Is the logic board toasted?