2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower
adapterdirectlytotheacpoweroutlet.
3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andmakesurethatthepowercableis
rmlyattachedtotheadapterbrickandthecomputer.
4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.
5.RemovethecomputerfromaThinkPadportreplicatorordockingstation.Referto“Detachinga
ThinkPadportreplicatorordockingstation”onpage107.
6.Removealldevicesandthentestforsystempowerwithminimaldevicesattached.
a.Disconnecttheacpoweradapterandallcablesfromthecomputer.
b.Closethecomputerdisplay,andturnthecomput erover.
c.Removethebattery,memorymodule,PCIExpressMiniCards,Ultrabaydevice,harddiskdriveor
solidstatedriveormSATAsolidstatedrive.SeeChapter6“Replacingdevices”onpage69.
d.Waitfor30seconds,andthenreinstallthememorymoduleandtheknowngoodbatteryortheac
poweradaptertotestthecomputerwithminimaldevicesattachedrst.
e.Reinstalleachdeviceoneatatimethatyouhaveremovedintheearliersteps.
Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:
1.Removeandreseatthebatterytomakesurethatitisproperlyconnected.Referto“Replacingthe
battery”onpage69.
2.Swapbatterieswithanothersimilarmodel,ifavailable.
IfanothersimilarThinkPadmodelisavailable,thenverifythatthebatterypackworksintheother
computerandthatthebatterypackfortheothermodelworksinthiscomputer .
3.Verifythebattery-statusindicator.Referto“P owerstatusindicators”onpage8.
Thebattery-statusindicatorisnormallyilluminatedwheneverthebatteryisinstalledandthecomputeris
on,ortheacpoweradapterisconnectedandthebatteryischar ging.Thisindicatormightbeblinkingor
solidineitherorangeorgreencolordependingonthestatusofthebattery .
Apowerbuttonproblem
Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.
Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonfor4secondsormor e.Ifthe
systemisstillnotreset,removetheacpoweradapterandthebattery.
Startupproblems
Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.
Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,checkthefollowingitem:
•Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,followtheappropriatecorrective
actionsforpower-onself-test(POST)errormessages.See“Errormessages”onpage136
Ifyoureceiveanerrormessagewhiletheoperatingsystemisloadingthedesktopcongurationafterthe
POSTiscompleted,checkthefollowingitems:
1.GototheLenovoSupportWebsiteat:http://www.lenovo.com/supportandsearchfortheerror
message.
2.VisittheMicrosoftKnowledgeBasehomepageat:http://support.microsoft.com/andsearchforthe
errormessage.
Chapter10.Troubleshootingcomputerproblems149