Last night I installed updates to my iBook G4 - I think the only update that I chose to install was the update for Java. Afterwards, I rebooted the computer and it would "freeze" on the grey Apple screen with no ticking gear. I reset the PMU with no success, and tried to reset the PRAM and that seemed to work. The computer booted up and gets as far as the "Starting Max OS X" with the blue bar progressing to full then freezes. I've tried started in Verbose mode and it gave me an "I/O" error and won't allow me to do anything else. I've tried to do the "fsck -fy" command to no avail. I'm not very familiar with Macs, I had bought this in December '05 and ended-up giving it to my niece & nephew to play on. I know that they had issues awhile back, not sure exactly what they were but they had to reinstall the OS. Now the disc has been lost so that is not an option. I don't know what else to try and I'm not really sure how much it'd cost to take it to a shop and don't think that it'd even be worth the money. Help!