Hi, 8 months ago my daughter's 800mhz G4 iBook had the logic board changed out . They also replaced the HD which only lasted 3 months. They replaced that one and it failed about a month ago. I replaced it myself with a brand new one and everything seemed ok but the thing is now freezing randomly and when I restart I sometimes get the flashing ? which will go away after restarting. Any ideas? Is it beyond hope? Thanks.