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Trouble?
n Nothing happened when you tried to turn on the PowerBook.
Make sure that all your equipment is connected properly, and
try pressing the power button again.
Make sure that the power adapter is plugged into both the
computer and an electrical outlet. If you are using a power
strip, make sure it is turned on.
n The computer is on, but the external monitor is dark.
Make sure that the monitor’s power cord is connected, and
that its power switch is on. Also try adjusting the monitor’s
brightness and contrast settings.
Activating the external monitor
You must activate the external monitor each time you connect it
to your computer.
1. Choose Control Panels from the Apple (K) menu, and
open the Monitors control panel.
You’ll see two rectangles representing your two monitors.
2. Click the large rectangle (representing your external
monitor).
238 Chapter 14: Expanding Your Computer System