The 17 basic troubleshooting procedures (along with the reasons why they can help) you'll learn are: Restart your Mac Force-quit an application Start up from another volume Run disk-repair utilities Erase and restore from backup Repair permissions Start up in safe mode Turn off login items Check preference files Reset PMU, SMU, SMC, NVRAM, or PRAM Use Activity Monitor Check free disk space Check log files Clear caches Check your RAM Test for reproducibility Get system information Joe also explains how to solve 15 common problems, including: Your computer won't turn on Your computer keeps turning itself off You experience repeated kernel panics Your Mac is abnormally slow You can't empty the Trash An application grinds to a halt An application crashes The keyboard or mouse doesn't work You lose your Internet connection Printing doesn't work Spotlight searches fail Keychain (seemingly) forgets passwords Apple Mail fails to connect Time Machine misbehaves A volume won't unmount

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