That's exactly what Apple's service manual say about AirPort problems on TiBooks TITLE PowerBook G4: AirPort Card Not Recognized Writer:Huckabone, Michael 2001-7-20 2001-8-17 TOPIC AirPort Card not recognized. DISCUSSION *RESTRICTED: Apple Specialists/Apple-Authorized Self-Servicing Providers * Internal Use Only Troubleshooting Procedure The steps to solve a symptom are listed sequentially. You might not need to perform every step before the symptom is solved. Start with the first step, and then test for the symptom. If the symptom persists, replace any modules you removed, go to the next step, and test again. Continue down the list until the symptom is solved. Use Software Update control panel or see the Apple Software Updates web page to make sure the latest version of AirPort software is installed. 1.Boot using Mac OS All extensions setting. 2.Reseat AirPort Card. 3.Remove and reinstall the AirPort software. 4.Replace with known-good AirPort Card. 5.Replace logic board. 6.Document Information Product Area: PowerBook G4 Category: PowerBook G4 Hardware Sub Category: Troubleshooting Keywords: kpbook kssts hts Contributor: Process Owner: