Ok So i have a relatively new ibook (2 months old) that came without the airport extreme card. I just recently purchased one on my own and went to install it. After installing it exactly as the manual had specified the computer failed to boot. But this is what it did when i hit the power button to boot it up: First it makes the hard drive clicking noise for a brief second. Then the fan turns on at full speed. From there the computer sits with a black screen and fan a blarin'. It does nothing else, i have tried leaving it for along time. No dice. When i remove the airport card it boots up and works fine. Does anyone have any tips or suggestions? I've tried reinstalling it many times now and no dice.