My g3 blue and white 350 is having a major problem. When it starts up in 9.2.2 the bar goes about 1/4 of the way then the cursor icon spins and spins and after a minute or so- the spinning icon turns into a bomb icon. I tried to start the computer from my Norton disc and it does pretty much the same thing- loads 1/4 of the startup and then nothing but spinning icon. I tried Pram reset but to no avail. I also took out the extra RAM I put in years ago- but that didn't help either. Does anyone have any ideas?