My girlfriends ibook will SOMETIMES boot up, and a few seconds later it will go gray, and tell you to restart or shut down. It is still under warranty, and seems to be a logic board problem. I have another computer, so dropping it off for service is not SUCH a big deal. HOWEVER.. I have been working on a powerpoint presentation for school on it, and its due on tuesday!!! It wont start up in target disk mode... does anyone have any ideas or advice for getting my data off?