Apple MC371LL/A Laptop User Manual


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55Chapter 4 Problem, Meet Solution
If your MacBook Pro doesn’t turn on or start up
Trythefollowingsuggestionsinorderuntilyourcomputerturnson:
 Makesurethepoweradapterispluggedintothecomputerandintoafunctioning
poweroutlet.Besuretousethe85WMagSafePowerAdapterthatcamewithyour
MacBookPro.Ifthepoweradapterstopschargingandyoudon’tseetheindicator
lightontheMagSafeconnectorturnonwhenyoupluginthepowercord,try
unpluggingandrepluggingthepowercordtoreseatit,ortryanotherpoweroutlet.
 Checkwhetherthebatteryneedstoberecharged.Pressthesmallbuttonontheleft
sideofyourcomputer.Youshouldseeonetoeightlightsindicatingthebattery’s
levelofcharge.Ifasingleindicatorlightison,connectyourpoweradapterto
recharge.Formoreinformationaboutbatteryindicatorlights,seepage56.
 Iftheproblempersists,closeallopendocumentsandquitallapplications.Return
thecomputertoitsfactorysettings(whilestillpreservingyourles)bypressing
theleftShiftkey,leftOption(alt)key,leftControlkey,andthepower(®)button
simultaneouslyforvesecondsuntilthecomputerrestarts.
 Ifyourecentlyinstalledadditionalmemory,makesurethatitiscorrectlyinstalledand
iscompatiblewithyourcomputer.Seewhetherremovingandreinstallingtheold
memoryallowsthecomputertostartup(seepage45).
 Pressthepower(®)buttonandimmediatelyholddowntheCommand(x),Option,
P,andRkeyssimultaneouslyuntilyouhearthestartupsoundasecondtimetoreset
theparameterRAM(PRAM).
 Ifyoustillcan’tstartupyourMacBookPro,see“LearningMore,Service,andSupport”
onpage64forinformationaboutcontactingAppleforservice.
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