Apple iMac G5 User's Guide Page 54

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54 Chapter 5 Troubleshooting
Problems That Prevent You From Using Your iMac G5
If your iMac G5 won’t respond or the pointer won’t move
 First, make sure the mouse and keyboard are connected. Unplug and then plug in
the connectors and make sure they are secure. If you have a wireless keyboard or
mouse, make sure the batteries are fresh.
 If that doesn’t work, try to force problem applications to quit. Hold down the Option
and Command (x) keys and then press the Esc key. If a dialog appears, select the
application and click Force Quit. Then save your work in any open applications and
restart your iMac G5 to be sure the problem is entirely cleared up.
 If you are unable to force the application to quit, press and hold the power button
(®) on the back of the iMac G5 for a few seconds to shut down the computer.
 If that doesn’t work, unplug the power cord from the iMac G5. Then plug the power
cord back in and press the power button (®) on the iMac G5 to turn it on.
If the problem occurs frequently when you use a particular application, check with the
applications manufacturer to see if it is compatible with your iMac G5.
For support and contact information about the software that came with your iMac G5,
go to www.apple.com/guide.
If the problem occurs frequently, you may need to reinstall your system software
(see “Reinstalling the Software That Came With Your iMac G5” on page 55).
If the iMac G5 freezes during startup or you see a flashing question mark
 Wait a few seconds. If the iMac G5 doesn’t start up after a delay, shut down your
iMac G5 by pressing and holding the power button (®) for about 5 seconds, until the
iMac G5 shuts down. Then hold down the Option key and press the power button
(®) again to start up your iMac G5. When your iMac G5 starts up, click the hard disk
icon, then click the right arrow.
 After the iMac G5 starts up, open System Preferences and click Startup Disk. Select a
local Mac OS X System folder.
 If the problem occurs frequently, you may need to reinstall your system software
(see “Reinstalling the Software That Came With Your iMac G5” on page 55).
If the iMac G5 won’t turn on or start up
 Make sure the power cord is plugged into the iMac G5 and into a functioning
power outlet.
 If that does not work, press the power button (®) and immediately hold down the
Command (x), Option, P, and R keys until you hear the startup sound a second time.
 If you recently installed additional memory, make sure that it is correctly installed
and that it is compatible with your iMac G5. Check whether removing it allows the
iMac G5 to start up (see page 47).
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