Apple MB953LL/A manual If your iMac won’t turn on or start up

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If your iMac freezes during startup or you see a flashing question mark

ÂWait a few seconds. If your iMac doesn’t start up after a delay, shut down your iMac by pressing and holding the power (®) button for about 5 seconds, until it shuts down. Then hold down the Option key and press the power (®) button again to start up your computer. Keep holding down the Option key until your iMac starts up, then click the arrow under the icon of the startup disk you want to use.

ÂAfter your iMac starts up, open System Preferences and click Startup Disk. Select a local Mac OS X System folder.

ÂIf the problem occurs frequently, you may need to reinstall your system software (see “Reinstalling the Software That Came with Your iMac” on page 54).

If your iMac won’t turn on or start up

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

ÂPress 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).

ÂIf 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 42).

ÂUnplug 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.

ÂIf you still can’t start up your iMac, see “Learning More, Service, and Support” on page 57 for information about contacting Apple for service.

46Chapter 4 Problem, Meet Solution

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Contents Congratulations, you and your iMac Were made for each other Say hello to your iMac Mac OS X Snow Leopard 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 Press the power button on the back to turn on your iMac Use Setup Assistant to configure your iMac To put your iMac to sleep, do one of the following Putting Your iMac to Sleep or Shutting It DownPutting Your iMac to Sleep To wake your iMac from sleep, do one of the followingShutting Down Your iMac Life with Your iMac Page Life with Your iMac Basic Features of Your iMac Camera indicator light 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 Dashboard key F4 About the Indicator Light Using the Apple Wireless KeyboardPairing Your Wireless Keyboard with Your iMac To pair your wireless keyboard Using Your KeyboardTo customize your keyboard Using the Apple Magic Mouse Using Your Apple Magic Mouse Pairing Your Apple Magic Mouse with Your iMacTo pair your mouse More Information Getting AnswersTo open Mac Help Using the iSight camera Mac Help and search for iSight Page Boost Your Memory Boost Your Memory Installing Memory To install memoryRemove the memory access door and set it aside Untuck the tabs Pull the tab Memory modules Raise stand Memory access door Phillips screwdriver To check the memory installed in your iMac Making Sure Your iMac Recognizes the New MemoryProblem, Meet Solution Problem, Meet Solution Problems That Prevent You from Using Your iMac If your iMac won’t respond or the pointer won’t moveIf your iMac won’t turn on or start up To replace the batteries in the wireless keyboard Replacing the BatteriesReplace the battery compartment cover To replace the batteries in the Apple Magic MouseUsing Apple Hardware Test To use Apple Hardware TestProblems with Your Internet Connection To use Network DiagnosticsTurn the modem off and on and reset the modem hardware To enter PPPoE settingsProblems with AirPort Wireless Communication Network ConnectionsTo check for updated software Keeping Your Software Up to DateInstalling Mac OS When an Application Doesn’t RespondReinstalling the Software That Came with Your iMac To install Mac OSInstalling Applications To install the applications that came with your computerIf you have trouble inserting a disc Other ProblemsIf you have trouble ejecting a disc If you have trouble scrolling with your mouse Learning More, Service, and SupportIf your date and time settings get lost repeatedly Online ResourcesOnscreen Help AppleCare Service and SupportSystem Profiler Country Phone Website Locating Your Product Serial Number Last, but Not Least Important Safety Information Last, but Not Least Power specifications Frequency 50 to 60 HzLaser Information for Optical Disc Drives Do Not Make Repairs YourselfImportant Handling Information Maximum operating altitude 10,000 feet 3048 metersCleaning Your iMac Display Cleaning Your iMacTo clean your iMac display, do the following Keyboard Cleaning Your MouseUnderstanding Ergonomics MouseDisplay Apple and the Environment ChairRegulatory Compliance Information Compliance StatementBluetooth Europe-EU Declaration of Conformity Taiwan Class B Statement Disposal and Recycling Information Taiwan European Union-Disposal Information Page Looking for Something? Index Looking for Something? Operating environment Looking for Something? Page