Lenovo thinkpad 13 - A Power Button Problem

2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower
adapterdirectlytotheacpoweroutlet.
3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andensurethatthepowercableisfirmly
attachedtotheadapterbrickandthecomputer.
4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.
Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:
1.Ifthebatteriesrunoutofpower,attachacpoweradaptertorechargethebattery.
2.Ifthebatteriesarechargedbutthecomputerdoesnotrun,callLenovoCustomerServiceCenterto
haveitserviced.
Apowerbuttonproblem
Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.
Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonforfoursecondsormore.Ifthe
systemisstillnotreset,removetheacpoweradapterandresetthesystembyinsertingoneendofaneedle
orastraightenedpaperclipintotheemergency-resethole.Tolocatetheemergency-resethole,refer
to“Bottomview”onpage5
.
Bootproblems
Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.
Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,followtheappropriatecorrectiveactions
forpower-onself-test(POST)errormessages.See“Errormessages”onpage78
.
Ifyoureceiveanerrormessagewhiletheoperatingsystemisloadingthedesktopconfigurationafterthe
POSTiscompleted,checkthefollowingitems:
1.GototheLenovoSupportWebsiteathttp://www.lenovo.com/supportandsearchfortheerrormessage.
2.GototheMicrosoftKnowledgeBasehomepageathttp://support.microsoft.com/andsearchforthe
errormessage.
Sleepandhibernationproblems
•Problem:Thecomputerenterssleepmodeunexpectedly.
Solution:Ifthemicroprocessoroverheats,thecomputerautomaticallyenterssleepmodetoallowthe
computertocoolandtoprotectthemicroprocessorandotherinternalcomponents.Checkthesettings
forsleepmode.
•Problem:Thecomputerenterssleepmodeimmediatelyafterthepower-onself-test.
Solution:Ensurethat:
–Thebatteriesarecharged.
–Theoperatingtemperatureiswithintheacceptablerange.Referto“Operatingenvironment”onpage
10.
Ifthebatteriesarechargedandthetemperatureiswithinrange,havethecomputerserviced.
•Problem:Acriticallow-batteryerroroccurs,andthecomputerimmediatelyturnsoff.
Solution:Thebatterypowerisgettinglow.Connecttheacpoweradaptertothecomputerandplugit
intoanelectricaloutlet.
•Problem:ThecomputerdisplayremainsblankafteryoupressFntoreturnfromsleepmode.
Solution:Checkwhetheranexternalmonitorwasdisconnectedorturnedoffwhilethecomputerwas
insleepmode.Ifyoudisconnectedorturnedofftheexternalmonitor,connectitorturnitonbefore
90ThinkPad13UserGuide