ThinkPad Yoga14 - Errors Without Messages

Solution:MachineUUIDisinvalid.Havethecomputerserviced.
•Message:Fanerror
Solution:Coolingfanhasfailed.Havethecomputerserviced.
•Message:Thermalsensingerror
Solution:Thethermalsensorisnotfunctioningcorrectly.Shutdownthecomputerimmediatelyand
havethecomputerserviced.
Errorswithoutmessages
•Problem:MyscreenkeepsblankingwhenIdonotwantitto.
Solution:
–IfyourcomputerispreinstalledwiththeWindows7operatingsystem,youcandisableanysystem
timers,suchastheLCDturn-offtimerortheblanktimerbydoingthefollowing:
1.StartPowerManager.
2.ClickthePowerplantab,andthenselectMaximumPerformancefromthepredefinedpower
plans.
–IfyourcomputerispreinstalledwiththeWindows8.1operatingsystem,doingthefollowing:
1.Gothedesktopandclickthebattery-statusiconinthewindowsnotificationarea.
2.ClickMorepoweroptions➙Showadditionalplans➙Highperformance.
•Problem:WhenIturnonthecomputer,nothingisdisplayedonthescreenandthecomputerdoesnot
beepwhilestartingup.
Note:Ifyouarenotsurewhetheryouheardanybeeps,turnoffthecomputerbypressingandholdingthe
powerbuttonforfoursecondsormore.Turnitonandlistenagain.
Solution:Ensurethat:
–Thebatteryisinstalledcorrectly.
–Theacpoweradapterisconnectedtothecomputerandthepowercordispluggedintoaworking
electricaloutlet.
–Thecomputeristurnedon.(Turnthepowerbuttononagainforconfirmation.)
Ifapower-onpasswordisset:
–Pressanykeytodisplaythepromptforthepower-onpassword.Ifthebrightnesslevelofthescreenis
low,increaseitbypressingthebrightness-upkey.
–TypethecorrectpasswordandpressEnter.
Iftheseitemsarecorrectlyset,andthescreenremainsblank,havethecomputerserviced.
•Problem:WhenIturnonthecomputer,onlyawhitepointerisdisplayedonablankscreen.
Solution:Ifyouhavemodifiedapartitiononyourharddiskdriveorhybriddrivebyusingpartition
software,informationaboutthatpartition,orthemasterbootrecordmighthavebeendestroyed.
1.Turnoffthecomputer,andthenturnitonagain.
2.Ifyoustillseeonlythepointeronthescreen,dothefollowing:
–Ifyouhaveusedthepartitionsoftware,examinethepartitionontheharddiskdriveorhybriddrive
byusingthesoftware,andrecoverthepartitionifrequired.
86UserGuide