Unfortunately my powerbook suffered a fall this evening. Probably a couple feet. I have 2 young children that use this machine frequently, I'm sure it's not it's first time experiencing such a fall. Anyway, now, the machine will turn on, I can hear the fan, light on front, but no chimes when turning on and absolutely nothing on the screen. Suggestions? I've tried just rebooting, removing the battery and restarting while plugged in and nothing changes.