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Actions:
•Themonitormightbeoperatinginalow-refreshratedisplaymode.Setthemonitortothehighest,
noninterlacedrefreshratesupportedbyyourmonitorandthevideocontrollerinyourcomputer.
Attention:Usingaresolutionorrefreshratethatisnotsupportedbyyourmonitormightdamageit.Check
thedocumentationthatcomeswithyourmonitortoverifythesupportedrefreshrates.
•Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfartheraway
fromthemonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)
apart.
3.Turnonthemonitor.
•YoucanresettherefreshratethroughyouroperatingsystemControlPanel:
OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound➙Adjust
screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.
OntheWindows8operatingsystem,openControlPanelandclickHardwareandSound➙Adjust
screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.
•Seeyouroperatingsystemdocumentationorhelpforfurtherinformationonmonitorsettings.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage117
fordetails.
Theimageisdiscolored
Symptom:Theimageisdiscolored.
Action:Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfurtherawayfrom
themonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)apart.
3.Turnonthemonitor.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage117
fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage109
•“AwirelessLANproblem”onpage110
•“AwirelessWANproblem”onpage110
•“Bluetoothproblem”onpage111
Formoreinformation,see“HelpandSupport”onpage117.
108ThinkCentreUserGuide
- ThinkCentre 1
- UserGuide 1
- ThirdEdition(September2012) 2
- Contents 3
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Generalbatterynotice 9
- Rechargeablebatterynotice 10
- Heatandproductventilation 10
- Operatingenvironment 11
- Modemsafetyinformation 11
- Lasercompliancestatement 12
- Powersupplystatement 12
- ©CopyrightLenovo2012 13
- Chapter1.Productoverview 15
- Chapter1.Productoverview3 17
- Specications 18
- Lenovoprograms 18
- Chapter1.Productoverview5 19
- Chapter1.Productoverview7 21
- Locations 22
- .Productoverview9 23
- 10ThinkCentreUserGuide 24
- Locatingcomponents 25
- Locatingpartsonthesystemboard 26
- Machinetypeandmodellabel 27
- 14ThinkCentreUserGuide 28
- Chapter2.Usingyourcomputer 29
- Usingthekeyboard 30
- UsingWindowsshortcutkeys 30
- Usingangerprintreader 30
- Usingthewheelmouse 31
- Adjustingaudio 31
- Aboutyourcomputeraudio 31
- UsingCDsandDVDs 32
- PlayingaCDorDVD 33
- RecordingaCDorDVD 33
- 20ThinkCentreUserGuide 34
- Chapter3.Youandyourcomputer 35
- Glareandlighting 36
- Aircirculation 36
- Registeringyourcomputer 37
- Voltage-selectionswitch 37
- Replacementpowercords 38
- Chapter4.Security 39
- BIOSpasswords 40
- Windowspasswords 41
- Conguringthengerprintreader 41
- Usingandunderstandingrewalls 41
- Protectingdataagainstviruses 41
- 28ThinkCentreUserGuide 42
- Installingorreplacinghardware 43
- Installingexternaloptions 43
- Attention: 44
- 32ThinkCentreUserGuide 46
- Removingthecomputercover 47
- Replacingtheopticaldrive 51
- 38ThinkCentreUserGuide 52
- 40ThinkCentreUserGuide 54
- 44ThinkCentreUserGuide 58
- 46ThinkCentreUserGuide 60
- Replacingthebattery 62
- Replacingtheacpoweradapter 63
- 50ThinkCentreUserGuide 64
- Replacingthepowerswitchboard 67
- 54ThinkCentreUserGuide 68
- Replacingtheheatsink 69
- Figure45.Removingtheheatsink 70
- Replacingthemicroprocessor 72
- 2onthemicroprocessor 73
- 62ThinkCentreUserGuide 76
- ReplacingtheWiFicardmodule 78
- InstallingtherearWiFiantenna 80
- RemovingtherearWiFiantenna 81
- InstallingtherearWiFiantennas 81
- RemovingtherearWiFiantennas 82
- Replacingthesystemfan 83
- 70ThinkCentreUserGuide 84
- Replacingtheinternalspeaker 86
- Replacingthekeyboardormouse 88
- Completingthepartsreplacement 89
- 76ThinkCentreUserGuide 90
- Obtainingdevicedrivers 91
- 78ThinkCentreUserGuide 92
- Chapter6.Recoveryinformation 93
- Creatingrecoverymedia 94
- Usingrecoverymedia 94
- Performingabackupoperation 94
- Performingarecoveryoperation 95
- Creatingandusingarescuemedium 96
- Reinstallingsoftwareprograms 98
- Reinstallingdevicedrivers 98
- Solvingrecoveryproblems 98
- 86ThinkCentreUserGuide 100
- Viewingandchangingsettings 101
- Usingpasswords 101
- AdministratorPassword 102
- HardDiskPassword 102
- Passwordconsiderations 102
- Power-OnPassword 102
- Enablingordisablingadevice 103
- Selectingastartupdevice 104
- EnablingErPcompliancemode 104
- ExitingtheSetupUtilityprogram 105
- 92ThinkCentreUserGuide 106
- Usingsystemprograms 107
- ThinkCentreUserGuide 108
- Chapter9.Preventingproblems 109
- UsingSystemUpdate 110
- Cleaningandmaintenance 110
- Cleaningyourcomputer 111
- Goodmaintenancepractices 112
- Movingyourcomputer 112
- Basictroubleshooting 113
- Troubleshootingprocedure 114
- Troubleshooting 114
- Audioproblems 115
- CDproblems 116
- DVDproblems 117
- DVDmoviewillnotplay 118
- Playbackisverysloworchoppy 118
- Intermittentproblems 119
- Monitorproblems 121
- Networkingproblems 122
- Ethernetproblems 123
- AwirelessLANproblem 124
- AwirelessWANproblem 124
- Optionproblems 125
- Performanceandlockupproblems 126
- Printerproblems 127
- Serialportproblems 128
- Softwareproblems 128
- USBproblems 129
- LenovoSolutionCenter 130
- LenovoSupportWebsite 132
- Helpandservice 132
- Callingforservice 132
- Usingotherservices 133
- Purchasingadditionalservices 133
- 120ThinkCentreUserGuide 134
- AppendixA.Notices 135
- Trademarks 136
- Exportclassicationnotice 137
- Electronicemissionsnotices 137
- 126ThinkCentreUserGuide 140
- ImportantWEEEinformation 141
- Recyclinginformation 141
- RecyclinginformationforBrazil 142
- 130ThinkCentreUserGuide 144
- ChinaRoHS 145
- TurkishRoHS 145
- UkraineRoHS 145
- IndiaRoHS 146
- 134ThinkCentreUserGuide 148
- 136ThinkCentreUserGuide 150
- 138ThinkCentreUserGuide 152
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