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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”onpage75
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”onpage75
fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage67
•“AwirelessLANproblem”onpage68
•“AwirelessWANproblem”onpage68
•“Bluetoothproblem”onpage69
Formoreinformation,see“HelpandSupport”onpage75.
66ThinkCentreM73zUserGuide
- FirstEdition(August2013) 2
- Contents 3
- AppendixF.ENERGYSTARmodel 5
- Index..................95 5
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Modemsafetyinformation 10
- Lasercompliancestatement 11
- Powersupplystatement 11
- Cleaningandmaintenance 11
- ThinkCentreM73zUserGuide 12
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specications 16
- Lenovoprograms 16
- Chapter1.Productoverview5 17
- Chapter1.Productoverview7 19
- Locations 20
- .Productoverview9 21
- 10ThinkCentreM73zUserGuide 22
- .Productoverview11 23
- Adjustingtheframestand 24
- Adjustingthemonitorstand 25
- Machinetypeandmodellabel 27
- 16ThinkCentreM73zUserGuide 28
- Chapter2.Usingyourcomputer 29
- Usingthekeyboard 30
- UsingWindowsshortcutkeys 30
- Usingangerprintreader 30
- Usingthewheelmouse 31
- Adjustingaudio 31
- Aboutyourcomputeraudio 31
- UsingCDsandDVDs 32
- PlayingaCDorDVD 33
- RecordingaCDorDVD 33
- 22ThinkCentreM73zUserGuide 34
- Chapter3.Youandyourcomputer 35
- Glareandlighting 36
- Aircirculation 36
- Registeringyourcomputer 37
- Voltage-selectionswitch 37
- Replacementpowercords 38
- Chapter4.Security 39
- Usingpasswords 40
- BIOSpasswords 40
- Windowspasswords 41
- Conguringthengerprintreader 41
- Usingandunderstandingrewalls 41
- Protectingdataagainstviruses 41
- 30ThinkCentreM73zUserGuide 42
- Installingorreplacinghardware 43
- Installingexternaloptions 43
- Replacingthewirelesskeyboard 44
- Replacingthewirelessmouse 45
- 34ThinkCentreM73zUserGuide 46
- Obtainingdevicedrivers 47
- 36ThinkCentreM73zUserGuide 48
- Chapter6.Recoveryinformation 49
- Creatingrecoverymedia 50
- Usingrecoverymedia 50
- Performingabackupoperation 50
- Performingarecoveryoperation 51
- Creatingandusingarescuemedium 52
- Reinstallingsoftwareprograms 54
- Reinstallingdevicedrivers 54
- Solvingrecoveryproblems 54
- 44ThinkCentreM73zUserGuide 56
- Viewingandchangingsettings 57
- Passwordconsiderations 58
- Power-OnPassword 58
- AdministratorPassword 58
- HardDiskPassword 58
- Enablingordisablingadevice 59
- Selectingastartupdevice 59
- EnablingErPcompliancemode 60
- Smartperformancechoices 60
- ExitingtheSetupUtilityprogram 61
- 50ThinkCentreM73zUserGuide 62
- Usingsystemprograms 63
- Chapter9.Preventingproblems 65
- UsingSystemUpdate 66
- Cleaningyourcomputer 67
- Goodmaintenancepractices 68
- Movingyourcomputer 68
- Basictroubleshooting 69
- Troubleshootingprocedure 70
- Troubleshooting 70
- Audioproblems 71
- CDproblems 72
- DVDproblems 73
- DVDmoviewillnotplay 74
- Playbackisverysloworchoppy 74
- Intermittentproblems 75
- Monitorproblems 77
- Networkingproblems 78
- Ethernetproblems 79
- AwirelessLANproblem 80
- AwirelessWANproblem 80
- Optionproblems 81
- Performanceandlockupproblems 82
- Printerproblems 83
- Serialportproblems 84
- Softwareproblems 84
- USBproblems 85
- LenovoSolutionCenter 85
- LenovoSupportWebsite 88
- Helpandservice 88
- Callingforservice 88
- Usingotherservices 89
- Purchasingadditionalservices 89
- 78ThinkCentreM73zUserGuide 90
- AppendixA.Notices 91
- Trademarks 92
- Exportclassicationnotice 93
- Electronicemissionsnotices 93
- Eurasiancompliancemark 95
- 84ThinkCentreM73zUserGuide 96
- ImportantWEEEinformation 97
- RecyclinginformationforJapan 97
- RecyclinginformationforBrazil 98
- 88ThinkCentreM73zUserGuide 100
- EuropeanUnionRoHS 101
- ChinaRoHS 101
- TurkishRoHS 101
- UkraineRoHS 102
- IndiaRoHS 102
- AppendixE.ChinaEnergyLabel 103
- 92ThinkCentreM73zUserGuide 104
- ©CopyrightLenovo2013 105
- 94ThinkCentreM73zUserGuide 106
- 96ThinkCentreM73zUserGuide 108
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