Apple PowerBook (Duo, 2300 Series) - Manual (Page 18)

Problems turning your computer on?
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Nothing happened when you pressed the Power key.
The battery may be drained. Make sure you plugged in the power adapter,
and that the power adapter is firmly connected to both the computer and a
power source. If the power adapter is plugged into a power strip, make sure
the power strip is plugged in and turned on. Then try pressing the
key again.
If the computer still doesn’t turn on, see “Problems Starting Up the
Computer” in Chapter 6.
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The computer made a sound, but you can’t see anything on the screen.
Adjust the brightness controls (marked with the icon ¤) until an image
appears and the screen is easy to read.
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You see a picture of a disk with a blinking question mark on the screen.
This icon usually means that the computer can’t find system software on
the hard disk or any disks attached to the computer. You may need to
reinstall system software. See “Reinstalling System Software” in Chapter 7.
Brightness controls
8 Chapter 1