Lenovo 23539KU Errorswithoutmessages

–Restorethesystemcongurationtowhatitwasbeforeyourcomputerenteredhibernationmode.
–Ifthememorysizehasbeenchanged,re-createthehibernationle.
•Message:Fanerror
Solution:Coolingfanhasfailed.Havethecomputerserviced.
•Message:ThissystemdoesnotsupportbatteriesthatarenotgenuineLenovo-madeorauthorized.The
systemwillcontinuetoboot,butmaynotchargeunauthorizedbatteries.PresstheESCkeytocontinue.
Attention:Lenovohasnoresponsibilityfortheperformanceorsafetyofunauthorizedbatteries,and
providesnowarrantiesforfailuresordamagearisingoutoftheiruse.
Solution:ReplacethebatterywiththecorrectLenovobatteryforthiscomputer.Ifyoustillseethesame
errormessage,contactLenovoservicetohavethecomputerserviced.
•Message:Thebatteryinstalledisnotsupportedbythissystemandwillnotcharge.Pleasereplacethe
batterywiththecorrectLenovobatteryforthissystem.PresstheESCkeytocontinue.
Solution:ReplacethebatterywiththecorrectLenovobatteryforthiscomputer.Ifyoustillseethesame
errormessage,contactLenovoservicetohavethecomputerserviced.
Errorswithoutmessages
•Problem:MyscreenkeepsblankingwhenIdonotwantitto.
Solution:Youcandisableanysystemtimers,suchastheLCDturn-offtimerortheblanktimer
1.S tartPowerManager.
2.ClickthePowerplantab,andthenselectMaximumPerformancefromthepredenedpowerplans.
•Problem:WhenIturnonthemachine,nothingappearsonthescreenandthemachinedoesnotbeep
whilestartingup.
Note:Ifyouarenotsurewhetheryouheardanybeeps,turnoffthecomputerbypressingandholdingthe
powerbuttonforfoursecondsormore.Turnitonandlistenagain.
Solution:Makesurethat:
–Thebatteryisinstalledcorr ectly.
–Theacpoweradapterisconnectedt othecomputerandthepowercor displuggedintoaworking
electricaloutlet.
–Thecomputeristurnedon.(T urnthepowerbuttononagainforconrmation.)
Ifapower-onpasswordisset:
–Pressanykeytodisplaythepromptforthepower-onpassword.Ifthebrightnesslevelofthescreenis
low,increaseitbypressingtheFn+F8orFn+F9.
–Typethecorrectpasswor dandpressEnter(referto“Usingpasswords”onpage49).
Iftheseitemsareproperlyset,andthescreenremainsblank,havethecomputerserviced.
•Problem:WhenIturnonthemachine,onlyawhitecursorisdisplayedonablankscreen.
Solution:Ifyouhavemodiedapartitiononyourharddiskdriveorsolidstatedrivebyusingapartition
software,informationaboutthatpartition,orthemasterbootr ecordmayhavebeendestroyed.
1.T urnoffthecomputer,andthenturnitonagain.
2.Ifyoustillseeonlythecursoronthescreen,dothefollowing:
–Ifyouhaveusedthepartitionsoftware,examinethepartitionontheharddiskdriveorsolidstate
drivebyusingthesoftware,andrecoverthepartitionifrequired.
Chapter10.Troubleshootingcomputerproblems141