Apple iMac Specifikace stáhnout pdf (Strana 49)

49Chapter 4 Problem, Meet Solution

If your iMac won’t turn on or start up

Â MakesurethepowercordispluggedintoyouriMacandafunctioningpoweroutlet.

Â RestartyourcomputerwhileholdingdowntheCommand(x)andRkeys,untilthe

computerrestarts.WhentheMacOSXUtilitiespaneapears,selectanoptiontorepair

yourdisk,restoreyoursoftware,orreinstallMacOSXandAppleapplications.For

moreinformation,see“Repairing,Restoring,orReinstallingMacOSXSoftware”on

page50.

Â Pressthepowerbutton(®)andimmediatelyholddowntheCommand(x),

Option,P,andRkeysuntilyouhearthestartupsoundasecondtime.Thisresetsthe

parameterRAM(PRAM).

Â Ifyourecentlyinstalledmemory,andyouriMacsoundstoneseveryveseconds,

makesurethatthememoryiscorrectlyinstalledandthatitiscompatiblewithyour

iMac.CheckwhetherremovingthememoryyouinstalledallowsyouriMactostart

up(seepage44).

Â Unplugthepowercordandwaitatleast30seconds.Plugthepowercordinagain

andpressthepowerbutton(®)tostartupyouriMac.

Â Ifyoustillcan’tstartupyouriMac,see“LearningMore,Service,andSupport”on

page62forinformationaboutcontactingAppleforservice.

If you have trouble inserting a disc

Â Usingacontinuousmotion,pushthediscintothedriveuntilyourngerstouchthe

edgeofyouriMac.

Â Useonlyastandard-sizedisc.

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Apple iMac Specifikace Strana 49