I gave my G4 iBook, purchased in August of '04, to my 13 year old daughter last year. She's been doing nothing but IM and email, and some homework. She said it was 'locking up' at times and brought it to me. I searched the forums and found similar problems. But, I think I have few more findings as a result of several boot attempts. Here's what I get and what I've been able to do: It boots beyond the gray screen to the blue screen, then stops. It will not mount to OS X install disc. It will mount via Firewire from my Powerbook. I ran 'Verify Disk' from Disk Utility and it said everything was ok. I can see the drive from the Powerbook, and everything appears in order. I reset PRAM, even let it 'dong' four times. A couple of times the screen displays thin lines across. Once, the display pixelated in some form or fashion. Hard to describe really. Is the harddrive going??? Any other suggestions??? Thanks in advance.