Hello all I've been using macs all my life but have never run into this problem. My ibook g4 just recently going crazy on me. I had it running then this dialog box came up with the power symbol in it saying i needed to restart my computer so i did as it said. After it chimed letting me kno it restarted the gray screen came up and i had the ? folder pop up. So i looked around online and the majority said it was my hard drive. My computer also had a bad battery it wouldn't hold a charge and the ibook itself had to be plugged in at all times. My ac charger pin broke (the part that goes into the computer) so i bought a new one a 45w but just recently finding out i need a 65w! But finally my computer does not turn on at all now. Before i go and buy a new hard drive and battery and charger i was wondering if anyone else has had any of these problems and if buying those things would fix it! I'm able to swap out most things on it since i have had it apart before! thanks in advance!