so a friend of my dad's is a big mac guy and he tells my dad that he has a couple of old powerbooks that are broke, supposedly. so he sends them to my dad who in turn gives them to me. this is a black g3 powerbook, not sure which model exactly. i go to plug it into the wall and i hear what sounds to be some sort of mac sound and the screen is all black, then i hear 3 beeps which seem to sound like a siren. i'd like to put this mac to some use for my mom to use so any help or ideas are greatly appreciated, thanks.