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Chapter10.Troubleshootinganddiagnostics
Thischapterprovidesinformationaboutdiagnosingandtroubleshootingcomputerproblems.Ifyour
computerproblemisnotdescribedhere,seeChapter11“Gettinginformation,help,andservice”onpage77
foradditionaltroubleshootingresources.
Basictroubleshooting
Thefollowingtableprovidesinformationtohelpyoutroubleshootyourcomputerproblems.
Note:Ifyoucannotcorrecttheproblem,havethecomputerserviced.Foralistofserviceandsupport
telephonenumbers,refertotheSafety,Warranty,andSetupGuidethatcomeswithyourcomputerorgoto
theLenovoSupportWebsiteathttp://www.lenovo.com/support/phone.
SymptomAction
Thecomputerdoesnotstart
whenyoupressthepower
switch.
Verifythat:
•Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.
•Ifyourcomputerhasasecondarypowerswitchontherearofthecomputer,
makesurethatitisswitchedon.
•Thepowerindicatoronthefrontofthecomputerison.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
Themonitorscreenisblank.
Verifythat:
•Themonitorsignalcableiscorrectlyconnectedtothemonitorandtothe
appropriatemonitorconnectoronthecomputer.
•Themonitorpowercordiscorrectlyconnectedtothemonitorandtoaworking
electricaloutlet.
•Themonitoristurnedonandthebrightnessandcontrastcontrolsareset
correctly.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
•Ifyourcomputerhastwomonitorconnectors,besuretousetheconnector
onthegraphicscard.
Thekeyboarddoesnotwork.
Verifythat:
•Thecomputeristurnedon.
•ThekeyboardissecurelyconnectedtoaUSBconnectoronthecomputer.
•Nokeysarestuck.
Themousedoesnotwork.
Verifythat:
•Thecomputeristurnedon.
•ThemouseissecurelyconnectedtoaUSBconnectoronthecomputer.
•Themouseisclean.Referto“Opticalmouse”onpage57forfurtherinformation.
©CopyrightLenovo2013,2014
59
- ThinkCentreE73z 1
- UserGuide 1
- FourthEdition(June2014) 2
- Contents 3
- ChinaRoHS................91 5
- TurkishRoHS...............91 5
- UkraineRoHS...............92 5
- IndiaRoHS................92 5
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Lasercompliancestatement 10
- Powersupplystatement 11
- Cleaningandmaintenance 11
- ThinkCentreE73zUserGuide 12
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specifications 16
- Lenovoprograms 16
- Chapter1.Productoverview5 17
- Chapter1.Productoverview7 19
- Locations 20
- .Productoverview9 21
- Adjustingtheframestand 22
- Adjustingthemonitorstand 23
- Machinetypeandmodellabel 24
- Chapter2.Usingyourcomputer 25
- NavigatingonWindows8 26
- NavigatingonWindows8.1 27
- Usingthekeyboard 29
- Usingthewheelmouse 29
- Adjustingaudio 29
- Aboutyourcomputeraudio 30
- UsingCDsandDVDs 31
- PlayingaCDorDVD 31
- RecordingaCDorDVD 32
- Chapter2.Usingyourcomputer21 33
- 22ThinkCentreE73zUserGuide 34
- Chapter3.Youandyourcomputer 35
- Glareandlighting 36
- Aircirculation 36
- Accessibilityinformation 36
- Chapter3.Youandyourcomputer25 37
- Chapter3.Youandyourcomputer27 39
- Registeringyourcomputer 40
- Chapter4.Security 41
- Usingpasswords 42
- BIOSpasswords 42
- Windowspasswords 43
- Usingandunderstandingfirewalls 43
- Protectingdataagainstviruses 43
- 32ThinkCentreE73zUserGuide 44
- Installingorreplacinghardware 45
- Installingexternaloptions 45
- Replacingthekeyboardormouse 45
- Replacingthewirelesskeyboard 46
- Replacingthewirelessmouse 47
- Obtainingdevicedrivers 49
- 38ThinkCentreE73zUserGuide 50
- Chapter6.Recoveryinformation 51
- Creatingrecoverymedia 52
- Usingrecoverymedia 52
- Performingabackupoperation 52
- Performingarecoveryoperation 53
- Creatingandusingarescuemedium 54
- Reinstallingsoftwareprograms 56
- Reinstallingdevicedrivers 56
- Solvingrecoveryproblems 56
- Refreshingyourcomputer 57
- Viewingandchangingsettings 59
- Passwordconsiderations 60
- Power-OnPassword 60
- AdministratorPassword 60
- HardDiskPassword 60
- Enablingordisablingadevice 61
- Selectingastartupdevice 61
- EnablingErPLPScompliancemode 62
- ExitingtheSetupUtilityprogram 63
- 52ThinkCentreE73zUserGuide 64
- Usingsystemprograms 65
- Chapter9.Preventingproblems 67
- UsingSystemUpdate 68
- Cleaningyourcomputer 69
- Goodmaintenancepractices 70
- Movingyourcomputer 70
- Basictroubleshooting 71
- Troubleshootingprocedure 72
- Troubleshooting 72
- Audioproblems 73
- CDproblems 74
- DVDproblems 75
- DVDmoviewillnotplay 76
- Playbackisverysloworchoppy 76
- Intermittentproblems 77
- Monitorproblems 78
- Networkingproblems 80
- AwirelessLANproblem 82
- AwirelessWANproblem 82
- Optionproblems 83
- Performanceandlockupproblems 84
- Printerproblems 85
- Serialconnectorproblems 86
- Softwareproblems 86
- USBproblems 87
- LenovoSolutionCenter 88
- Informationresources 89
- LenovoThinkVantageTools 89
- HelpandSupport 89
- SafetyandWarranty 89
- LenovoWebsite 89
- LenovoSupportWebsite 90
- Helpandservice 90
- Callingforservice 90
- Usingotherservices 91
- Purchasingadditionalservices 91
- 80ThinkCentreE73zUserGuide 92
- AppendixA.Notices 93
- Trademarks 94
- Exportclassificationnotice 95
- Electronicemissionsnotices 95
- Eurasiancompliancemark 97
- Brazilregulatorynotice 97
- Mexicoregulatorynotice 97
- 86ThinkCentreE73zUserGuide 98
- ImportantWEEEinformation 99
- RecyclinginformationforJapan 99
- RecyclinginformationforBrazil 100
- 90ThinkCentreE73zUserGuide 102
- EuropeanUnionRoHS 103
- ChinaRoHS 103
- TurkishRoHS 103
- UkraineRoHS 104
- IndiaRoHS 104
- AppendixE.ChinaEnergyLabel 105
- 94ThinkCentreE73zUserGuide 106
- ©CopyrightLenovo2013,2014 107
- 96ThinkCentreE73zUserGuide 108
- 98ThinkCentreE73zUserGuide 110
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