I have a G3 iBook that seesm to have died. I was using it earlier when the screen froze and it started to crackle (like a tv slightly out of tune). The screen then faded to white, so i held down the button and switched it back on. It made the 'bong!' sound and i could hear the hard drive whirl but nothing else happens. I've haven't altered anything recently and added memory. I did upgrade to 10.3.7 when it was released. Anyone have any ideas?