Just got my sisters G4 Powerbook 12" 1.5g model. No longer under warranty of course. She said it wasn't working very well and thought I could look at it for her. Here's what I've found so far: 1. Shift key doesn't work but the computer always boots in safe mode. I figured it was stuck so I took out the key board and cleaned it but that did nothing. So apparently the mac thinks the shift key is depressed but when it boots up (in safe mode of course) the shift key is dead when I type or highlight items. Weird. This of course is preventing me from running the hardware test (holding down option with the install disc) because the shift key is canceling any button combinations I do. I was able to reset the pram but that did nothing to solve my problems. I managed to wipe the Mac and do a clean install (after about 30 kernel crashes) but that did nothing. So the mac boots up in safe mode no matter what I do and that's buggering up everything. 2. Airport card is dead. System profiler doesn't see it. I checked it out and it's properly installed but it's just not recognizing it anymore. 3. Audio card is dead. Again, no built in audio. Profiler says there is no sound card. I don't know where the sound card is. Is it "built in" like the name says and is it part of the logic board? So my question is this, is there anyway these are all related? Has anyone come across this before? Is my sisters Mac screwed? thanks.