I brought my iBook G4 to school today, and it sent the whole time in my backpack. When I got home, I turned it on, and it started booting up, but when the screen came on, it was only gray. I opened it, and saw that the lcd was still plugged in, so what could this be? Can the 32mb vram iBooks get the graphics problem? I've tried squeezing as hard as I could to see if it would come on, but nothing. Also, the brightness controls aren't working.