to find some solutions to try when you have a problem. You can also find more troubleshooting information in Mac Help and on the MacBook Support website at www.apple.com/support/macbook. If you experience a problem with your MacBook, there is usually a simple and quick solution. Think about the conditions that led up to the problem. Making a note of things you did before the problem occurred will help you narrow down possible causes and find the answers you need. Things to note include:  The applications you were using when the problem occurred. Problems that occur only with a specific application might indicate that the application is not compatible with the version of the Mac OS installed on your computer.  Any new software that you installed, especially software that added items to the System folder.  Any hardware that you installed, such as additional memory or a peripheral. Problems That Prevent You from Using Your MacBook If your MacBook doesn't respond or the pointer doesn't move On rare occasions, an application might "freeze" on the screen. Mac OS X provides a way to quit a frozen application without restarting your computer. Quitting a frozen application might allow you to save your work in other open applications. To force an application to quit: 1 Press Command (x)-Option-Esc or choose Apple ( ) > Force Quit from the menu bar. The Force Quit Applications dialog appears with the application selected. 42 Chapter 4 Problem, Meet Solution 2 Click Force Quit. The application quits, leaving all other applications open. If you need to, you can also restart the Finder from this dialog. Next, save your work in any open applications and restart the computer to make sure the problem is entirely cleared up. If you are unable to force the application to quit, press and hold the power (®) button for a few seconds to shut down the computer. Wait 10 seconds and then turn on the computer. If the problem occurs frequently, choose Help > Mac Help from the menu bar at the top of the screen. Search for the word "freeze" to get help for instances when the computer freezes or doesn't respond. If the problem occurs only when you use a particular application, check with the application's manufacturer to see if it is compatible with your computer. To get support and contact information for the software that came with your MacBook, go to www.apple.com/guide. If you know an application is compatible, you might need to reinstall your computer's system software. See "Reinstalling the Software That Came with Your MacBook" on page 51. If your MacBook freezes during startup, or you see a flashing question mark, or the display 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. Chapter 4 Problem, Meet Solution 43  Wait a few seconds. If the computer doesn't soon start up, 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 that doesn't work, try using Disk Utility to repair the disk:  Insert the Mac OS X Install Disc 1 into your computer.  Restart your computer and hold down the C key as it starts up.  Choose Installer > Open Disk Utility. When Disk Utility opens, follow the instructions in the First Aid pane to see if Disk Utility can repair the disk. If using Disk Utility doesn't help, you might need to reinstall your computer's system software. See "Reinstalling the Software That Came with Your MacBook" on page 51. If your MacBook doesn't turn on or start up Try the following suggestions in order until your computer turns on:  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.  Check whether the battery needs to be recharged. Press the small button on the battery. You should see one to four lights indicating the battery's level of charge. If a single indicator light is flashing, allow the power adapter to charge the battery at least until that indicator light is glowing continuously. 44 Chapter 4 Problem, Meet Solution  If the problem persists, return the computer to its factory settings by disconnecting the power adapter, removing the battery, and holding down the power (®) button for at least 5 seconds.  If you recently installed additional memory, make sure that it is correctly installed and that it is compatible with your computer. See whether removing it and reinstalling the old memory allows the computer to start up (see "Installing Memory" on page 35).  Press the power (®) button and immediately hold down the Command (x), Option, P, and R keys simultaneously until you hear the startup sound a second time to reset the parameter RAM (PRAM).  If you still can't start up your MacBook, see "Learning More, Service, and Support" on page 52 for information about contacting Apple for service. If the display suddenly goes black or your MacBook freezes Try restarting your MacBook. 1 Unplug any devices that are connected to your MacBook, except the power adapter. 2 Press the power (®) button to restart the system. 3 Let the battery charge to at least 10 percent before plugging in any external devices and resuming your work. To see how much the battery has charged, look at the Battery ( menu bar. ) status icon in the The display might also darken if you have energy saver features set for the battery. Chapter 4 Problem, Meet Solution 45 If you forgot your password You can reset your administrator password and passwords for all other accounts. 1 Insert the Mac OS X Install Disc 1. Then restart your computer and hold down the C key as it starts up. 2 Choose Utilities > Reset Password from the menu bar. Follow the onscreen instructions. If you have trouble ejecting a disc  Quit any applications that might be using the disc and try again.  If this doesn't work, restart the computer while holding down the trackpad button. Using Apple Hardware Test If you suspect a problem with the MacBook hardware, you can use the Apple Hardware Test application to help determine if there is a problem with one of the computer's components, such as the memory or processor. To use Apple Hardware Test: 1 Disconnect all external devices from your computer except the power adapter. If you have an Ethernet cable connected, disconnect it. 2 Insert the Mac OS X Install Disc 1 that came with your computer. 3 Restart your computer and hold down the D key as it starts up. 4 When the Apple Hardware Test main screen appears, follow the onscreen instructions. 5 If Apple Hardware Test detects a problem, it displays an error code. Make a note of the error code before pursuing support options. If Apple Hardware Test doesn't detect a hardware failure, the problem may be software related. 46 Chapter 4 Problem, Meet Solution For more information about Apple Hardware Test, see the Apple Hardware Test Read Me file on the Mac OS X Install Disc 1. Problems with Your Internet Connection Your MacBook has the Setup Assistant application to help walk you through setting up an Internet connection. Open System Preferences and click Network. Click the "Assist me" button to open Network Setup Assistant. If you have trouble with your Internet connection, you can try the steps in this section starting with Network Diagnostics. To use Network Diagnostics: 1 Choose Apple ( ) > System Preferences. 2 Click Network and then click "Assist me." 3 Click Diagnostics to open Network Diagnostics. 4 Follow the onscreen instructions. If Network Diagnostics can't resolve the problem, there may be a problem with the Internet service provider (ISP) you are trying to connect to, with an external device you are using to connect to your ISP, or with the server you are trying to access. You can try the following steps. Cable Modem, DSL, and LAN Internet Connections Make sure all modem cables are fully plugged in. Check the modem power cord, the cable from the modem to the computer, and the cable from the modem to the wall jack. Also check the cables and power supplies for Ethernet hubs and routers. Chapter 4 Problem, Meet Solution 47 Turn the modem off and on to reset the modem hardware Turn off your DSL or cable modem for a few minutes, and then turn it back on. Some ISPs recommend that you unplug the modem's power cord. If your modem has a reset button, you can press it either before or after you turn the power off and on. Important: Instructions that refer to modems do not apply to LAN users. LAN users might have hubs, switches, routers, or connection pods that cable and DSL modem users do not have. LAN users should contact their network administrator rather than an ISP. PPPoE Connections If you are unable to connect to your Internet service provider using PPPoE, make sure you have entered the correct information in Network preferences. To check Network preference settings: 1 Choose Apple ( ) > System Preferences. 2 Click Network. 3 Choose Network Port Configurations from the Show pop-up menu. 4 Drag Built-in Ethernet to the top of the Port Configurations list. 5 Choose Built-in Ethernet from the Show pop-up menu. 6 Click PPPoE. 7 Select "Connect using PPPoE." 8 Check the Account Name field to make sure you've entered the correct information from your ISP. 9 If you chose to save your password, retype it making sure it's correct. 48 Chapter 4 Problem, Meet Solution 10 Click TCP/IP. Make sure you've entered the correct information from your ISP in this pane. 11 Click Apply Now. Network Connections Make sure the Ethernet cable is plugged into your MacBook and into the network. Check the cables and power supplies to your Ethernet hubs and routers. If you have two or more computers sharing an Internet connection, be sure that your network is set up properly. You need to know if your ISP provides only one IP address or if it provides multiple IP addresses, one for each computer. If only one IP address is provided, then you must have a router capable of sharing the connection, also known as network address translation (NAT) or "IP masquerading." For setup information, check the documentation provided with your router or ask the person who set up your network. You can use an AirPort Base Station to share one IP address among multiple computers. For information about using an AirPort Base Station, check Mac Help or visit the Apple AirPort website at www.apple.com/support/airport. If you cannot resolve the issue using these steps, contact your ISP or network administrator. Problems with AirPort Extreme Wireless Communication If you have trouble using AirPort Extreme wireless communication:  Make sure the computer or network you are trying to connect to is running and has a wireless access point. Chapter 4 Problem, Meet Solution 49  Make sure you have properly configured the software according to the instructions that came with your base station or access point.  Make sure you are within antenna range of the other computer or the network's access point. Nearby electronic devices or metal structures can interfere with wireless communication and reduce this range. Repositioning or rotating the computer might improve reception.  Check the AirPort (Z) status menu in the menu bar. Up to four bars appear, indicating signal strength. If signal strength is low, try moving your location.  See AirPort Help (choose Help > Mac Help, and then choose Library > AirPort Help from the menu bar). Also see the instructions that came with the wireless device for more information. Keeping Your Software Up to Date You can connect to the Internet and automatically download and install the latest free software versions, drivers, and other enhancements from Apple. When you are connected to the Internet, Software Update checks Apple's Internet servers to see if any updates are available for your computer. You can set your MacBook to check the Apple servers periodically, and download and install updated software. To check for updated software: 1 Open System Preferences. 2 Click the Software Update icon and follow the instructions on the screen.  For more information, search for "Software Update" in ...

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