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Chapter10.Troubleshootinganddiagnostics
Thischapterdescribessomebasictroubleshootinganddiagnosticprograms.Ifyourcomputerproblem
isnotdescribedhere,seeChapter11“Gettinginformation,help,andservice”onpage121foradditional
troubleshootingresources.
Basictroubleshooting
Thefollowingtableprovidesinformationtohelpyoutroubleshootyourcomputerproblems.
Note:Ifyoucannotcorrecttheproblem,havethecomputerserviced.Foralistofserviceandsupport
telephonenumbers,refertotheSafety,Warranty,andSetupGuidethatcomeswithyourcomputerorgoto
theLenovoSupportWebsiteathttp://www.lenovo.com/support/phone.
SymptomAction
Thecomputerdoesnotstart
whenyoupressthepower
button.
Verifythat:
•Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.
•Ifyourcomputerhasasecondarypowerbuttonontherearofthecomputer,
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”onpage97forfurtherinformation.
©CopyrightLenovo2013,2014
101
- ThinkCentreE73 1
- UserGuide 1
- ThirdEdition(June2014) 2
- Contents 3
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Lasercompliancestatement 10
- Powersupplystatement 11
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specifications 17
- Lenovoprograms 17
- Chapter1.Productoverview7 19
- Locations 21
- .Productoverview11 23
- Locatingcomponents 24
- Locatingpartsonthesystemboard 25
- Locatinginternaldrives 26
- Machinetypeandmodellabel 27
- 16ThinkCentreE73UserGuide 28
- Chapter2.Usingyourcomputer 29
- NavigatingonWindows8 30
- NavigatingonWindows8.1 31
- Usingthewheelmouse 33
- Adjustingaudio 33
- UsingWindowsshortcutkeys 33
- Aboutyourcomputeraudio 34
- UsingCDsandDVDs 35
- PlayingaCDorDVD 35
- RecordingaCDorDVD 36
- Chapter3.Youandyourcomputer 37
- Glareandlighting 38
- Aircirculation 38
- Accessibilityinformation 38
- Chapter3.Youandyourcomputer27 39
- Chapter3.Youandyourcomputer29 41
- Registeringyourcomputer 42
- Chapter4.Security 43
- Lockingthecomputercover 44
- Usingpasswords 45
- BIOSpasswords 45
- Windowspasswords 46
- Usingandunderstandingfirewalls 46
- Protectingdataagainstviruses 46
- Installingorreplacinghardware 47
- Installingexternaloptions 47
- Removingthecomputercover 47
- 1inwardandpivotthedrivebay 50
- 1asshownto 52
- Replacingthebattery 54
- Replacingtheharddiskdrive 55
- Replacingtheopticaldrive 57
- 48ThinkCentreE73UserGuide 60
- Replacingthesolid-statedrive 61
- Replacingthemicroprocessor 73
- 62ThinkCentreE73UserGuide 74
- 2onthemicroprocessor 75
- Replacingthesystemfanassembly 76
- ReplacingtheWiFiunits 78
- RemovingtheWiFiadaptercard 79
- RemovingtheWiFicardmodule 79
- 68ThinkCentreE73UserGuide 80
- InstallingtheWiFiunits 81
- 70ThinkCentreE73UserGuide 82
- InstallingtherearWiFiantenna 83
- RemovingtherearWiFiantenna 84
- InstallingthefrontWiFiantenna 85
- RemovingthefrontWiFiantenna 86
- Replacingthekeyboardormouse 87
- Completingthepartsreplacement 88
- Obtainingdevicedrivers 89
- 78ThinkCentreE73UserGuide 90
- Chapter6.Recoveryinformation 91
- Creatingrecoverymedia 92
- Usingrecoverymedia 92
- Performingabackupoperation 92
- Performingarecoveryoperation 93
- Creatingandusingarescuemedium 94
- Reinstallingsoftwareprograms 96
- Reinstallingdevicedrivers 96
- Solvingrecoveryproblems 96
- Refreshingyourcomputer 97
- Viewingandchangingsettings 99
- Passwordconsiderations 100
- Power-OnPassword 100
- AdministratorPassword 100
- HardDiskPassword 100
- Enablingordisablingadevice 101
- Selectingastartupdevice 102
- EnablingErPLPScompliancemode 102
- ExitingtheSetupUtilityprogram 103
- 92ThinkCentreE73UserGuide 104
- Usingsystemprograms 105
- ThinkCentreE73UserGuide 106
- Chapter9.Preventingproblems 107
- UsingSystemUpdate 108
- Cleaningandmaintenance 108
- Cleaningyourcomputer 109
- Goodmaintenancepractices 110
- Movingyourcomputer 110
- Chapter9.Preventingproblems99 111
- 100ThinkCentreE73UserGuide 112
- Basictroubleshooting 113
- Troubleshootingprocedure 114
- Troubleshooting 114
- Audioproblems 115
- CDproblems 116
- DVDproblems 117
- DVDmoviewillnotplay 118
- Playbackisverysloworchoppy 118
- Intermittentproblems 119
- Monitorproblems 121
- Theimageappearstobeflickering 122
- Theimageisdiscolored 122
- Networkingproblems 123
- Optionproblems 125
- Performanceandlockupproblems 126
- Printerproblems 128
- Serialconnectorproblems 128
- Softwareproblems 129
- USBproblems 130
- Diagnosticprograms 130
- LenovoSolutionCenter 131
- LenovoThinkVantageToolbox 131
- PC-DoctorforDOS 131
- Informationresources 133
- LenovoThinkVantageTools 133
- HelpandSupport 133
- SafetyandWarranty 133
- LenovoWebsite 133
- LenovoSupportWebsite 134
- Helpandservice 134
- Callingforservice 134
- Usingotherservices 135
- Purchasingadditionalservices 135
- 124ThinkCentreE73UserGuide 136
- AppendixA.Notices 137
- Trademarks 138
- Exportclassificationnotice 139
- Televisionoutputnotice 139
- Electronicemissionsnotices 139
- Eurasiancompliancemark 141
- Brazilregulatorynotice 141
- Mexicoregulatorynotice 141
- ImportantWEEEinformation 143
- RecyclinginformationforJapan 143
- RecyclinginformationforBrazil 144
- 134ThinkCentreE73UserGuide 146
- EuropeanUnionRoHS 147
- ChinaRoHS 147
- TurkishRoHS 147
- UkraineRoHS 148
- IndiaRoHS 148
- AppendixE.ChinaEnergyLabel 149
- 138ThinkCentreE73UserGuide 150
- ©CopyrightLenovo2013,2014 151
- 140ThinkCentreE73UserGuide 152
- 142ThinkCentreE73UserGuide 154
- 144ThinkCentreE73UserGuide 156
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