Apple PowerBook (Duo, 2300 Series) - Manual (Page 91)

m There may be a problem with the display of windows. Restart the
computer and hold down the Option key until the desktop icons appear.
(When the desktop appears, all windows will be closed.)
When I start up the computer, I see a message about the system software.
m The system software on the startup disk you’re using may be incomplete or
damaged, or may be the wrong version. Make sure you’re using the correct
disk as a startup disk.
m If you’re sure you’re using the correct startup disk, you may need to
reinstall system software. See “Reinstalling System Software” in Chapter 7.
The computer displays a flashing question mark icon.
m This icon usually means that the computer can’t find system software
on any disks attached to the computer. (After it displays this icon for two
minutes, the computer will shut itself off.)
If the computer is connected to any external hard disks, make sure that the
SCSI chain is terminated properly (see “Connecting SCSI Devices” in
Chapter 3) and that the external hard disks are turned on. Then restart the
computer. If the problem recurs, the hard disk or its system software may
be damaged. See Chapter 7, “Diagnostic Techniques.”
m Turn off the computer, disconnect all external devices except the power
adapter, and restart the computer. If the computer starts up, turn to
“Problems with Equipment Connected to Your Macintosh PowerBook,”
later in this chapter.
m If the computer is not connected to any external devices, you may need to
reinstall system software. See “Reinstalling System Software” in Chapter 7.
The computer freezes or displays an error message during startup.
m Turn off the computer, disconnect all external devices except the power
adapter, and restart the computer. If the computer starts up, turn to
“Problems with Equipment Connected to Your Macintosh PowerBook,”
later in this chapter.
83 Tips and Troubleshooting