Apple MC812LL/A If your iMac won’t turn on or start up, If you have trouble inserting a disc

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If your iMac won’t turn on or start up

ÂÂ Make sure the power cord is plugged into your iMac and a functioning power outlet.

ÂÂ Restart your computer while holding down the Command (x) and R keys, until the computer restarts. When the Mac OS X Utilities pane apears, select an option to repair your disk, restore your software, or reinstall Mac OS X and Apple applications. For more information, see “Repairing, Restoring, or Reinstalling Mac OS X Software” on page 50.

ÂÂ 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. This resets the parameter RAM (PRAM).

ÂÂ If you recently installed memory, and your iMac sounds tones every five seconds, make sure that the memory is correctly installed and that it is compatible with your iMac. Check whether removing the memory you installed allows your iMac to start up (see page 44).

ÂÂ Unplug the power cord and wait at least 30 seconds. Plug the power cord in again and press the power button (®) to start up your iMac.

ÂÂ If you still can’t start up your iMac, see “Learning More, Service, and Support” on page 62 for information about contacting Apple for service.

If you have trouble inserting a disc

ÂÂ Using a continuous motion, push the disc into the drive until your fingers touch the edge of your iMac.

ÂÂ Use only a standard-size disc.

Chapter 4 Problem, Meet Solution

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Contents Congratulations, you and your iMac Were made for each other Welcome to your iMac OS X Lion Page Contents Looking for Something? Ready, Set Up, Go Ready, Set Up, Go What’s in the Box Setting Up Your iMac Ready, Set Up, Go Turn on your wireless keyboard and mouse Ready, Set Up, Go To set up your iMac Configure your iMacCustomize your desktop and set your preferences Putting Your iMac to Sleep Putting Your iMac to Sleep or Shutting It DownTo put your iMac to sleep, do one of the following To wake your iMac from sleep, do one of the followingShutting Down Your iMac Page Life with Your iMac Basic Features of Your iMac Built-in ambient light sensor Ports on Your iMac Ethernet port 10/100/1000Base-T Other Components of Your iMac Power port Features of the Apple Wireless Keyboard and Magic Mouse Apple Wireless Keyboard About the Indicator Light Using the Apple Wireless KeyboardUsing Your Apple Wireless Keyboard Pairing Your Apple Wireless Keyboard with Your iMacTo pair your wireless keyboard To customize your keyboardUsing the Apple Magic Mouse Using Your Apple Magic Mouse Pairing Your Apple Magic Mouse with Your iMacTo pair your mouse To use your remote Using the Apple RemoteReplacing the Battery Pairing Your Apple RemoteTo replace the battery To pair your remoteMore Information Getting AnswersTo get help from Help Center System Preferences by choosing Apple K System Downloading Mac software Boost Your Memory Boost Your Memory To install memory Installing MemoryRemove the memory access door and set it aside Untuck the tabs Pull the tab Memory modules Raise stand Memory access door Phillips screwdriver Making Sure Your iMac Recognizes the New Memory To check the memory installed in your iMacProblem, Meet Solution Problem, Meet Solution An Ounce of Prevention Problems That Prevent You from Using Your iMacIf your iMac won’t respond or the pointer won’t move Problem, Meet Solution If you have trouble inserting a disc If your iMac won’t turn on or start upIf your date and time settings get lost repeatedly Repairing, Restoring, or Reinstalling Mac OS X SoftwareIf you have trouble ejecting a disc If you have trouble scrolling with your mouseProblem, Meet Solution To connect by using a Wi-Fi network Repairing a Disk with Disk UtilityTo open the Mac OS X Utilities application Reinstalling Mac OS X and Apple Applications Restoring Information Using a Time Machine BackupRestoring Your Computer to Its Factory Settings To use Apple Hardware Test Checking for a Hardware ProblemReplacing the Batteries To replace the batteries in the Apple Wireless Keyboard To replace the batteries in the Apple Magic Mouse Problems with Your Internet ConnectionCable Modem, DSL Modem, and LAN Internet Connections To use Network DiagnosticsPPPoE Connections To enter PPPoE settingsProblems with Wireless Communication Keeping Your Software Up to Date Learning More, Service, and SupportOnline Resources Onscreen Help AppleCare Service and SupportSystem Information Country Phone Website Locating Your Product Serial NumberLast, but Not Least Important Safety Information Last, but Not Least Mouse Class 1 Laser Information Power specificationsDo Not Make Repairs Yourself Laser Information for Optical Disc DrivesÂÂ Maximum operating altitude 10,000 feet 3048 meters Important Handling InformationCleaning Your iMac Display Cleaning Your iMacTo clean your iMac display, do the following Understanding Ergonomics Cleaning Your MouseKeyboard MouseDisplay Chair Apple and the EnvironmentRegulatory Compliance Information Bluetooth Europe-EU Declaration of Conformity Korea Warning Statements Japan Vcci Class B Statement Taiwan Battery Statement Chinese Battery Statement Page Looking for Something? Index Looking for Something? Parameter RAM, resetting 49 ports Force an application to quit Page Simultaneously published in the United States and Canada