Lenovo ThinkPad Edge E540 - Power Problems; A Power Button Problem

Solution:Dothefollowing:
1.Makesurethattheconnectionoftheacpoweradapteriscorrect.Forinstructionsonconnectingtheac
poweradapter,seeSafety,Warranty,andSetupGuidethatcomeswithyourcomputer.
2.Iftheconnectionoftheacpoweradapteriscorrect,turnoffthecomputer,thendisconnecttheacpower
adapterandremovethemainbattery.
3.Reinstallthebatteryandreconnecttheacpoweradapter,thenturnonthecomputer.
4.IfthepoweradaptericonstillisnotdisplayedintheWindowsnoticationareaandthesystemstatus
indicatordoesnotblinkthreetimeswhenanacpowersourceisconnected,havetheacpoweradapter
andyourcomputerserviced.
Note:IfyouareusingtheWindows7operatingsystem,todisplaythepoweradapter(powerplug)icon,click
ShowhiddeniconsintheWindowsnoticationarea.
Powerproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Ifyourcomputerisgettingnopoweratall,checkthefollowingitems:
1.Verifythepowerbutton.Thepowerbuttonhislitwheneverthecomputerison.
2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower
adapterdirectlytotheacpoweroutlet.
3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andmakesurethatthepowercableis
rmlyattachedtotheadapterbrickandthecomputer.
4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.
5.Removealldevicesandthentestforsystempowerwithminimaldevicesattached.
a.Disconnecttheacpoweradapterandallcablesfromthecomputer.
b.Closethecomputerdisplay,andturnthecomputerover.
c.Removethebattery.Referto“Replacingthebattery”onpage69.
d.Removethememorymodule.Referto“Replacingamemorymodule”onpage97.
e.RemovetheWirelessLANcardandWirelessWANcard.Referto“ReplacingawirelessLANcard”
onpage92
and“ReplacingawirelessWANcard”onpage95.
f.Removetheharddiskdrive.Referto“Replacingtheharddiskdriveorsolid-statedrive”onpage85.
g.Waitfor30seconds,andthenreinstallthememorymoduleandtheknowngoodbatteryortheac
poweradaptertotestthecomputerwithminimaldevicesattachedrst.
h.Reinstalleachdeviceoneatatimethatyouhaveremovedintheearliersteps.
Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:
1.Removeandreseatthebatterytomakesurethatitisproperlyconnected.Referto“Replacingthe
battery”onpage69
.
2.Swapbatterieswithanothersimilarmodel,ifavailable.
IfanothersimilarThinkPadmodelisavailable,thenverifythatthebatterypackworksintheother
computerandthatthebatterypackfortheothermodelworksinthiscomputer.
Apowerbuttonproblem
Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.
Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonfor4secondsormore.Ifthe
systemisstillnotreset,removetheacpoweradapterandthebattery.
Chapter10.Troubleshootingcomputerproblems141