I have a macbookpro 13 running snow leopard ver 10.6.7
It says no airport card installed. I did command-option and power button.. Then I flip on the power button, no card installed still.. hmm, dont know what to do.
It wouldn't be the first time one of the connectors inside the case wasn't pressed on well. If System Profiler doesn't show a card installed, open up the bottom of the case and make sure it's connected.