Apple M9290LL/A User Guide - Page 30

If the computer won't respond: First, make sure the mouse and keyboard are connected. m Unplug and then plug in the connectors and make sure they are secure. Then try to cancel what the computer is doing. m Try to force problem applications to quit. Hold down the Option and Command (x) keys, then press the Esc key. Select the application and click Force Quit. If the computer still doesn't respond, restart it. m Hold the Power button (®) on the computer for five seconds. When the computer turns off, press the Power button again to restart it. m If that doesn't work, unplug the power cord from the computer. Then plug the power cord back in and press the Power button on the computer to turn it on. Then do this: If the problem occurs frequently when you use a particular application: m Check with the application's manufacturer to see if it is compatible with your computer. m For support and contact information about the software that came with your computer. Go to www.apple.com/guide If the problem occurs frequently: m You may need to reinstall your system software. Choose Mac Help from the Help menu and type "install system software" for more information. If you see a flashing question mark during startup: If the computer doesn't start up after a delay, hold down the Option key and restart your computer. m When your computer starts up, click the hard disk icon, then click the arrow. Then do this: After the computer starts up: m Open System Preferences and click Startup Disk. Select a local Mac OS X System folder. If the problem occurs frequently: m You may need to reinstall your system software. Choose Mac Help from the Help menu and type "install system software" for more information. 29