Apple Macintosh PowerBook 145 - Manual (Page 21)

m If you see a blinking question mark on your screen, you
need to install system software on the computer’s hard disk.
System software includes the programs the computer uses to
start itself up. Continue with the section “Installing System
Software.”
m If you see the Macintosh desktop on your screen, the
computer is ready to use. You do not need to install system
software. Continue with the section “What to Do Next.”
Trouble?
m The computer made a sound, but you can’t see anything on
the screen.
Adjust the brightness control (marked with the icon ¤) and
the contrast control (O) until an image appears and the
screen is easy to read.
m Nothing happened when you pressed the power button.
Make sure 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 power
button again.
Contrast control
Brightness control
Chapter 1: Setting Up Your Macintosh PowerBook 5