User Manual

ManualsBrandsLenovo ManualsComputers & TabletsThinkPad T450 14" Refurbished Laptop - Intel Core i5 - 8GB Memory - 500GB Hard Drive - Black

151

152

153

154

155

156

157

158

159

160

4.IfthepoweradaptericonstillisnotdisplayedintheWindowsnotiﬁcationarea,havetheacpower

adapterandyourcomputerserviced.

Powerproblems

Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.

Ifyourcomputerisgettingnopoweratall,checkthefollowingitems:

1.Verifythepowerbutton.Referto“Statusindicators”onpage8.Thepowerbuttonisilluminated

wheneverthecomputerison.

2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower

adapterdirectlytotheacpoweroutlet.

3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andensurethatthepowercableisﬁrmly

attachedtotheadapterbrickandthecomputer.

4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.

Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:

1.Ifthebatteryrunsoutofpower,attachacpoweradaptertorechargethebattery.

2.Ifthebatteryischargedbutthecomputerdoesnotrun,callLenovoCustomerServiceCentertohave

itserviced.

Apowerbuttonproblem

Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.

Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonforfoursecondsormore.Ifthe

systemisstillnotreset,removetheacpoweradapterandresetthesystembyinsertingoneendofaneedle

orastraightenedpaperclipintotheemergency-resethole.Tolocatetheemergency-resethole,refer

to“Bottomview”onpage6.

Bootproblems

Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.

Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,followtheappropriatecorrectiveactions

forpower-onself-test(POST)errormessages.See“Errormessages”onpage132.

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:

–Thebatteryischarged.

Chapter10.Troubleshootingcomputerproblems143