Teach Yourself VISUALLY OS X Mountain Lion

Restart Your Mac

If a hardware device is having a problem with some system files, it often helps to restart your Mac. By rebooting the computer, you reload the entire system, which is often enough to solve many computer problems.

For a problem device that does not have its own power switch, restarting your Mac might not resolve the problem because the device remains powered up the whole time. You can power cycle — shut down and then restart — such devices as a group by power cycling your Mac.

Restart Your Mac

Restart Your Mac

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