Apple Z0D5 User Guide - Page 54

software. See Repairing, Restoring, or Reinstalling Mac OS X Software

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If your MacBook freezes during startup, or you see a flashing question mark, or the screen is dark and the sleep indicator light is glowing steadily (not in sleep) The flashing question mark usually means that the computer can't find the system software on the hard disk or any disks attached to the computer. ÂÂ Wait a few seconds. If the computer doesn't start up soon, shut it down by pressing and holding the power (®) button for about 8 to 10 seconds. Disconnect all external peripherals and try restarting by pressing the power (®) button while holding down the Option key. When your computer starts up, click the hard disk icon, and then click the right arrow. After the computer starts up, open System Preferences and click Startup Disk. Select a local Mac OS X System folder. If the problem occurs frequently, you might need to reinstall your computer's system software. See "Repairing, Restoring, or Reinstalling Mac OS X Software" on page 56. If your MacBook doesn't turn on or start up Try the following suggestions in order until your computer turns on: ÂÂ Make sure the power adapter is plugged into the computer and into a functioning power outlet. Be sure to use the 60W MagSafe Power Adapter that came with your MacBook. If the power adapter stops charging and you don't see the indicator light on the power adapter turn on when you plug in the power cord, try unplugging and replugging the power cord to reseat it. ÂÂ If the indicator light on the MagSafe connector is amber, the battery might need to be recharged. Keep the power adapter connected and charge the battery with the computer off. A green light indicates that the battery is fully charged. ÂÂ If the problem persists, reset the MacBook power manager (while still preserving your files) by pressing the left Shift key, the left Option (alt) key, the left Control key, and the power (®) button simultaneously for five seconds until the computer restarts. 54 Chapter 4 Problem, Meet Solution

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54
Chapter 4
Problem, Meet Solution
If your MacBook freezes during startup, or you see a flashing question mark, or the
screen is dark and the sleep indicator light is glowing steadily (not in sleep)
The flashing question mark usually means that the computer can’t find the system
software on the hard disk or any disks attached to the computer.
Â
Wait a few seconds. If the computer doesn’t start up soon, shut it down by pressing
and holding the power (
®
) button for about 8 to 10 seconds. Disconnect all external
peripherals and try restarting by pressing the power (
®
) button while holding down
the Option key. When your computer starts up, click the hard disk icon, and then
click the right arrow. After the computer starts up, open System Preferences and click
Startup Disk. Select a local Mac OS X System folder.
If the problem occurs frequently, you might need to reinstall your computer’s system
software. See “Repairing, Restoring, or Reinstalling Mac OS X Software” on page 56.
If your MacBook doesn’t turn on or start up
Try the following suggestions in order until your computer turns on:
Â
Make sure the power adapter is plugged into the computer and into a functioning
power outlet. Be sure to use the 60W MagSafe Power Adapter that came with your
MacBook. If the power adapter stops charging and you don’t see the indicator light
on the power adapter turn on when you plug in the power cord, try unplugging and
replugging the power cord to reseat it.
Â
If the indicator light on the MagSafe connector is amber, the battery might need to
be recharged. Keep the power adapter connected and charge the battery with the
computer off. A green light indicates that the battery is fully charged.
Â
If the problem persists, reset the MacBook power manager (while still preserving your
files) by pressing the left Shift key, the left Option (alt) key, the left Control key, and
the power (
®
) button simultaneously for five seconds until the computer restarts.