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3.Turnonthemonitor.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage109
fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage99
•“AwirelessLANproblem”onpage100
•“AwirelessWANproblem”onpage101
•“Bluetoothproblems”onpage101
Formoreinformation,see“HelpandSupport”onpage109.
Ethernetproblems
ForEthernetproblems,selectyoursymptomfromthefollowinglist:
•“Yourcomputercannotconnecttothenetwork”onpage99
•“Theadapterstopsworkingfornoapparentreason”onpage100
•“IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnectionfails
orerrorsoccur”onpage100
•“IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,it
connectsat100Mbps”onpage100
Yourcomputercannotconnecttothenetwork
Symptom:Yourcomputercannotconnecttothenetwork.
Actions:Makesurethat:
•Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedtoboththeEthernetconnectorofyourcomputerand
theRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis100
meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblempersists,try
adifferentcable.
•Thecableisinstalledproperly.
•Youareusingthecorrectdevicedriver.
OntheWindows7operatingsystemandtheWindowsVistaoperatingsystem,dothefollowing:
1.ClickStart➙ControlPanel.
2.ClickHardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.
4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmightnot
usethecorrectdriverorthedriverisnotenabled.Toupdatethedriver,right-clickthehighlighted
adapter.
5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.
•Theswitchportandtheadapterhavethesameduplexsetting.
Chapter10.Troubleshootinganddiagnostics99
- ThinkCentre 1
- UserGuide 1
- Contents 5
- ©CopyrightLenovo2011 7
- Importantsafetyinformation 9
- Powercordsandpoweradapters 10
- Plugsandoutlets 11
- Externaldevices 11
- Heatandproductventilation 11
- Operatingenvironment 12
- Modemsafetyinformation 12
- Lasercompliancestatement 13
- Powersupplystatement 13
- Cleaningandmaintenance 13
- Chapter1.Productoverview 15
- Chapter1.Productoverview3 17
- Specications 19
- Softwareoverview 19
- SoftwareprovidedbyLenovo 19
- FingerprintSoftware 20
- Chapter1.Productoverview7 21
- AdobeReader 22
- Antivirussoftware 22
- Locations 22
- .Productoverview9 23
- 10ThinkCentreUserGuide 24
- Locatingcomponents 25
- Locatingpartsonthesystemboard 26
- Locatinginternaldrives 27
- Machinetypeandmodellabel 27
- 14ThinkCentreUserGuide 28
- Chapter2.Usingyourcomputer 29
- Usingangerprintreader 30
- Usingthewheelmouse 30
- Adjustingaudio 31
- Aboutyourcomputeraudio 31
- UsingCDsandDVDs 32
- PlayingaCDorDVD 32
- RecordingaCDorDVD 33
- 20ThinkCentreUserGuide 34
- Chapter3.Youandyourcomputer 35
- Glareandlighting 36
- Aircirculation 36
- Voltage-selectionswitch 37
- Replacementpowercords 37
- 24ThinkCentreUserGuide 38
- Chapter4.Security 39
- Lockingthecomputercover 40
- Usingpasswords 41
- BIOSpasswords 41
- Windowspasswords 42
- SettingtheSecurityChip 42
- Usingandunderstandingrewalls 43
- Protectingdataagainstviruses 43
- 30ThinkCentreUserGuide 44
- Installingorreplacinghardware 45
- Installingexternaloptions 45
- Removingthecomputercover 46
- InstallingorreplacingaPCIcard 48
- Figure12.RemovingaPCIcard 49
- 1onthememory 52
- Installingthecardreader 55
- 42ThinkCentreUserGuide 56
- Replacingthecardreader 57
- 44ThinkCentreUserGuide 58
- Replacingthebattery 59
- Replacingthemicroprocessor 64
- 2onthemicroprocessor 66
- 1,pin2,pin3 70
- Replacingthefrontfanassembly 71
- Replacingtherearfanassembly 72
- Replacingtheinternalspeaker 75
- Replacingthekeyboardormouse 77
- Completingthepartsreplacement 78
- Obtainingdevicedrivers 79
- 66ThinkCentreUserGuide 80
- Chapter6.Recoveryinformation 81
- Usingrecoverymedia 82
- Performingabackupoperation 82
- Performingarecoveryoperation 83
- Creatingandusingarescuemedium 84
- Creatingarescuemedium 84
- Usingarescuemedium 85
- Reinstallingsoftwareprograms 86
- Reinstallingdevicedrivers 87
- Solvingrecoveryproblems 87
- 74ThinkCentreUserGuide 88
- Viewingandchangingsettings 89
- Passwordconsiderations 90
- Power-OnPassword 90
- AdministratorPassword 90
- HardDiskPassword 90
- Enablingordisablingadevice 91
- Selectingastartupdevice 92
- EnablingErPcompliancemode 92
- Smartperformancechoices 93
- 80ThinkCentreUserGuide 94
- Usingsystemprograms 95
- Chapter9.Preventingproblems 97
- Cleaningyourcomputer 99
- Goodmaintenancepractices 100
- Movingyourcomputer 100
- Chapter9.Preventingproblems87 101
- 88ThinkCentreUserGuide 102
- Basictroubleshooting 103
- Troubleshootingprocedure 104
- Troubleshooting 105
- Audioproblems 105
- ThinkCentreUserGuide 106
- CDproblems 107
- DVDproblems 107
- BlackscreeninsteadofDVDvideo 108
- DVDmoviewillnotplay 108
- Playbackisverysloworchoppy 108
- Intermittentproblems 109
- Monitorproblems 111
- Theimageappearstobeickering 112
- Theimageisdiscolored 112
- Networkingproblems 113
- AwirelessLANproblem 114
- Optionproblems 115
- Performanceandlockupproblems 116
- Insufcientmemory 118
- Printerproblems 119
- Serialportproblems 119
- Softwareproblems 119
- USBproblems 120
- Diagnosticprograms 121
- LenovoThinkVantageToolbox 121
- PC-DoctorforDOS 121
- Informationresources 123
- LenovoThinkVantageTools 123
- LenovoWelcome 123
- HelpandSupport 123
- SafetyandWarranty 124
- LenovoSupportWebsite 124
- Helpandservice 124
- Callingforservice 125
- Usingotherservices 125
- Purchasingadditionalservices 126
- Exportclassicationnotice 127
- Televisionoutputnotice 127
- Compliance 127
- JapaneseVCCIClassBstatement 128
- Japanrecyclingstatements 129
- AppendixC.Powercordnotice 131
- 118ThinkCentreUserGuide 132
- AppendixC.Powercordnotice119 133
- 120ThinkCentreUserGuide 134
- AppendixD.Notices 135
- Trademarks 136
- 124ThinkCentreUserGuide 138
- 126ThinkCentreUserGuide 140
- *0A22862* 142
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