"No airport card is installed" when power adapter is not connected

Hi
I am getting the "No Airport Card is Installed' message whenever my Macbook Pro does not have the power adapter connected. When the power is connected everything works fine. If it is disconnected, the airport icon turns grey, airport disappears, and I can't turn on airport anymore.
Thanks

Hi, and welcome to Apple Discussions.
Are you using an original AirPort card and not an AirPort Extreme card? The AirPort Extreme card is not compatible with a G3 iBook and installation of an AirPort Extreme card can, in fact, damage the iBook's logic board beyond repair.
Are you following the installation instructions, as outlined in this Apple Knowledge Base article?
http://docs.info.apple.com/article.html?artnum=111919

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All Apple Products that Accept the Extreme Airport Cards
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http://tinyurl.com/3ovq734

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How do i know an airport card is installed & not working or not installed?

My Mac details are:
Model Name: Mac Pro
Model Identifier: MacPro1,1
Processor Name: Dual-Core Intel Xeon
Processor Speed: 2.66 GHz
Number Of Processors: 2
Total Number Of Cores: 4
L2 Cache (per processor): 4 MB
Memory: 2 GB
Bus Speed: 1.33 GHz
I've always just connected to the internet via an ethernet cable to my router/modem, but now I don't want the long cord going from the phone line to the office within the house. I have a Airport Express and was wondering if I could set this up in the lounge and connect my computer/laptop/stereo etc.
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Message was edited by: mindgrind

If you remove the side door and look down at the mother board, you can observe if the airport card is there. You can also use ASP . There are kits for the bluetooth and airport card available. Installation is not difficult. The difficult part is finding the connector wires. these are tucked at the top border of the mother board. The other issue is which lead goes to which connector. You can find the answer on the internet, just Google it.
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Since I am using some processor-intensive applications my battery life doesn't last long, and it is incredibly inconvenient to have to keep plugging the adapter in and out.
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You might need an electrician to check or replace the electrical outlet or wiring, if it really is a ground loop. Try temporarily plugging the TV and Mac into the same surge strip. If the interference goes away, then the fault is likely in the outlet(s) that the Mac and TV are plugged in to. (The surge strip puts both devices on the "same outlet" thus eliminating the ground loop between outlets in your home wiring. Of course, a bad or old surge strip could cause a ground loop as well so if you're already using a surge strip, try another surge strip in case the ground loop is in the strip.)
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"No airport card is installed" when power adapter is not connected

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