Apple laptop_ Specifikace stáhnout pdf (Strana 54)

54 Chapter 4 Problem, Meet Solution

If your MacBook freezes during startup, or you see a ashing question mark, or the

screen is dark and the sleep indicator light is glowing steadily (not in sleep)

Theashingquestionmarkusuallymeansthatthecomputercan’tndthesystem

softwareontheharddiskoranydisksattachedtothecomputer.

Â Waitafewseconds.Ifthecomputerdoesn’tstartupsoon,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theproblemoccursfrequently,youmightneedtoreinstallyourcomputer’ssystem

software.See“Repairing,Restoring,orReinstallingMacOSXSoftware”onpage56.

If your MacBook doesn’t turn on or start up

Trythefollowingsuggestionsinorderuntilyourcomputerturnson:

Â 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.

Â IftheindicatorlightontheMagSafeconnectorisamber,thebatterymightneedto

berecharged.Keepthepoweradapterconnectedandchargethebatterywiththe

computero.Agreenlightindicatesthatthebatteryisfullycharged.

Â Iftheproblempersists,resettheMacBookpowermanager(whilestillpreservingyour

les)bypressingtheleftShiftkey,theleftOption(alt)key,theleftControlkey,and

thepower(®)buttonsimultaneouslyforvesecondsuntilthecomputerrestarts.

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Apple laptop_ Specifikace Strana 54