well its an ibook G4 933 with 256mb ram, combo drive, and airport extreme. Everything is still configured the way that it came. Its running Os X 10.3.3. All updates installed. If i close the lid to transport the ibook from my house to school, when i get to school the ibook wont power up. It will just have a black screen when I open it. You can still hear the hard drive moving and clicking away but nothing on the screen. When you press the power button, and hold it. You can hear the hard drive slowing to a stop and when you hit the power button again the computer starts up fine. I already did a PMU reset, reformatted the computer, apple has already replaced the hard drive. I have no idea what else to do. When I called for my last repair when they replaced a bad hard drive, they said they cant ship out the ibook till they test it and guess what they tested and shipped me the ibook with the same freaking problems. Currently the ibook has been shipped back to apple to see if they can fix it. But the tech said if they can reproduce the problem they cant fix it. Well the sleep issue does not happen all the time its very sapratic. My first apple product and I am not getting a great impression with apple at this moment.