iBook 500 won't boot with airport card installed


I just bought a new airport card for my iBook 500 12". I am running OSX 10.4.2. When the airport card is installed, the computer will not power up. I can hear the hard drive spin up, but I get nothing on the screen. I have tried resetting the pram, as well as resetting the power manager, but no luck. Would this mean that the card is bad?