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Chapter 5 Troubleshooting 65
 If you recently installed additional memory, make sure that it is correctly installed
and that it is compatible with your computer. See whether removing it allows the
computer to start up (see page 57).
 If you are still unable to start up your computer, see the service and support
information that came with your PowerBook for information on contacting Apple for
service.
If the display suddenly goes black or your system freezes
Try restarting your system.
1 Unplug any devices that are connected to your PowerBook except the power adapter.
2 Hold down the Command (x) and Control keys and press the Power button (®) to
restart the system.
3 Let the battery charge to at least 10 percent before plugging in any external devices
and resuming your work.
To see how much the battery has recharged, look at the Battery status icon in the
menu bar.
Other Problems
If you forgot your password
You can reset your administrator password.
1 Insert your Mac OS X Install Disc 1. Then restart your computer and hold down the C
key as it starts up.
2 Choose Installer > Reset Password from the menu bar. Follow the instructions on the
screen.
If you have a problem with an application
 For problems with software from a manufacturer other than Apple, contact the
manufacturer. Software manufacturers often provide software updates on their
websites.
 You can configure your PowerBook to automatically check for and install the latest
Apple software using the Software Update pane of System Preferences. For more
information, choose Help > Mac Help from the menu bar and search for “Software
Update.”
If you have trouble using AirPort Extreme wireless communication
 Make sure you have properly configured the software according to the instructions
that came with your AirPort Extreme Card, base station, or AirPort Express.
 Make sure the computer or network you are trying to connect to is running and has
a wireless access point.
LL3092.book Page 65 Friday, February 4, 2005 6:02 PM