Apple MACBOOK PRO User Guide - Page 96

 See AirPort Help (choose Help > Mac Help, then choose Library > AirPort Help from the menu bar). Also see the instructions that came with the wireless device for more information. If your computer's hard disk is not recording data correctly  In a few instances, if the hard disk undergoes unusually strong vibration, the Sudden Motion Sensor might become active and result in dropped frames or unrecorded portions of sound or data when the disk is recording intensively. If this occurs, make sure that your MacBook Pro is in a stable environment without vibration or abrupt movement.  If vibration isn't the problem, run Disk Utility (in /Applications/Utilities/) to check the drive. If you have trouble ejecting a disc  Quit any applications that might be using the disc and try again. If this doesn't work, restart the computer while holding down the trackpad button. If you suspect a problem with your computer hardware  You can use the Apple Hardware Test application to help determine if there is a problem with one of your computer's components, such as the memory or processor. For more information about Apple Hardware Test, see "Using Apple Hardware Test" on page 99. If you have problems with your Internet connection  Make sure your phone line or network cable is connected and functioning properly.  If you are using a dial-up Internet connection, make sure that your phone cord is plugged into the Apple USB Modem (sold separately) and not the Ethernet (G) port on the computer. 96 Chapter 5 Troubleshooting