c.Removethebattery.Referto“Replacingthebattery”onpage67.
d.Removethememory(SO-DIMM).Referto“Replacingamemorymodule”onpage69.
e.RemovethePCIExpressMiniCard.Referto“ReplacingaPCIExpressMiniCardforwireless
LAN/WiMAXconnection”onpage78.
f.Removetheharddiskdriveandsolidstatedrive.Referto“Replacingtheharddiskdriveorsolid
statedrive”onpage72.
g.RemovetheUltrabaydevices.Referto“ReplacingtheSerialUltrabaySlimdevice”onpage92.
h.Waitfor30seconds,andthenreinstalltheSO-DIMMandtheknowngoodbatteryortheacpower
adaptertotestthecomputerwithminimaldevicesattachedrst.
i.Reinstalleachdeviceoneatatimethatyouhaver emovedintheearliersteps.
Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:
1.Removeandreseatthebatterytomakesurethatitisproperlyconnected.Referto“Replacingthe
battery”onpage67.
2.Swapbatterieswithanothersimilarmodel,ifavailable.
IfanothersimilarThinkPadmodelisavailable,thenverifythatthebatterypackworksintheother
computerandthatthebatterypackfortheothermodelworksinthiscomputer.
3.Verifythebattery-statusindicator.Referto“Powerstatusindicators”onpage9.
Thebattery-statusindicatorisnormallyilluminatedwheneverthebatteryisinstalledandthecomputeris
on,ortheacpoweradapterisconnectedandthebatteryischarging.Thisindicatormaybeblinkingor
solidineitherorangeorgreencolordependingonthestatusofthebattery.
Apowerbuttonproblem
Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.
Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonfor4secondsormore.Ifthe
systemisstillnotreset,removetheacpoweradapterandthebattery.
Startupproblems
Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.
Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,followtheappropriatecorrectiveactions
forpower-onself-test(POST)errormessages.See“Errormessages”onpage138.
Ifyoureceiveanerrormessagewhiletheoperatingsystemisloadingthedesktopcongurationafterthe
POSTiscompleted,checkthefollowingitems:
•GototheLenovoSupportWebsiteathttp://www.lenovo.com/supportandsearchfortheerrormessage.
•GototheMicrosoftKnowledgeBasehomepageathttp://support.microsoft.com/andsearchfortheerror
message.
Sleepandhibernationproblems
•P roblem:Thecomputerenterssleepmodeunexpectedly.
Solution:Ifthemicroprocessoroverheats,thecomputerautomaticallyenterssleepmodetoallowthe
computertocoolandtoprotectthemicroprocessorandotherinternalcomponents.Checkthesettings
forsleepmode.
•P roblem:Thecomputerenterssleepmode(thesleepindicatorturnson)immediatelyafterthepower-on
self-test.
Solution:Makesurethat:
Chapter10.T roubleshootingcomputerproblems151