Apple Power Mac G5 (Early 2005) - Manual (Page 72)

72 Chapter 4 Troubleshooting
The computer won’t turn on or start up.
 Make sure the power cord is connected to a working power source. The plug on the
power cord must be completely inserted into the computer’s power socket and
firmly seated for your computer to operate correctly.
 If your computer still does not start, try resetting the parameter random access
memory (PRAM). Turn on the computer and immediately hold down the Command
(x), Option, P, and R keys until you hear the startup sound a second time. Release
the keys. Set your hard disk as the computer’s startup disk, by doing the following:
1 Choose Apple () > System Preferences
2 Click Startup Disk
3 Select your hard disk
The PRAM is reset to the default values and your clock settings may need to be reset.
 If your computer does not start up after resetting the PRAM, restart your computer
while holding down the Option key to select your startup system.
 If this doesn't work, restart your computer while holding down the Shift key.
The status light flashes and the computer won’t start up.
 If you recently installed additional memory, a PCI expansion card, or another internal
component, make sure that it is correctly installed and that it is compatible with your
computer. See if removing it allows the computer to start up.
 If the status light still flashes, determine the number of flashes to identify the
problem:
 2 flashes: no RAM installed
 3 flashes: incompatible RAM installed
 4 flashes: no good DIMM banks
 5 or 6 flashes: contact an Apple Authorized Service Provider
You are unable to eject a disc.
A file on the disc may be in use. Quit applications that are open, then try again.
If that doesn’t work, choose Apple () > Restart and hold down either the mouse
button or the Media Eject (C) key on your Apple Keyboard.
If that doesn’t work:
1 Shut down the computer.
2 Carefully press down the front panel covering the front of the drive tray and locate the
small hole below the drive tray.
3 Carefully insert the end of a large straightened paper clip into the hole.
4 Push firmly until the tray opens.
5 Pull out the tray, remove the disc, and push the tray to close it.
LL3218Q87.book Page 72 Wednesday, March 16, 2005 6:28 PM