I went to turn my iBook G3 900mhz tis morning, and it will not boot. I here the drive spinning, but I get no chime and no video. So I unpluged it, and removed the battery, and tried to boot it again, but the same thing. Yesterday when I went to boot it it did the start up chime, got video, but when it went ot OSX the screen went black, but the screen was working (video black, not screen off black if that makes sense.) I had to doa hard reboot then it booted fine and ran good all day. I just put to sleep last night by closing the lid but when I opened i up it froze so I had to do a hard reboot, thats when the problem started today. Anyone have any suggestions. logic board? I was hoping to use this today for a very important presentation, and I SOL?