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Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.See“Additionalinformation
resources”onpage31fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage45
•“AwirelessLANproblem”onpage46
•“AwirelessWANproblem”onpage47
•“Bluetoothproblems”onpage47
Ethernetproblems
ForEthernetproblems,selectyoursymptomfromthefollowinglist:
•“Yourcomputercannotconnecttothenetwork”onpage45
•“Theadapterstopsworkingfornoapparentreason”onpage46
•“IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnectionfails
orerrorsoccur”onpage46
•“IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,
itconnectsat100Mbps”onpage46
Yourcomputercannotconnecttothenetwork
Symptom:Yourcomputercannotconnecttothenetwork.
Actions:Makesurethat:
•Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedtoboththeEthernetconnectorofyourcomputerand
theRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis100
meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblempersists,try
adifferentcable.
•Thecableisinstalledproperly.
•Youareusingthecorrectdevicedriver.
OntheWindows7operatingsystem,dothefollowing:
1.ClickStart➙ControlPanel.
2.ClickHardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.
4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmightnot
usethecorrectdriverorthedriverisnotenabled.Toupdatethedriver,right-clickthehighlighted
adapter.
5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.
OntheWindows8operatingsystem,dothefollowing:
1.OpenControlPanel.
2.ClickHardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.
Chapter5.Troubleshootinganddiagnostics45
- ThinkCentre 1
- HardwareMaintenanceManual 1
- SecondEdition(September2012) 4
- GS-35F-05925 4
- Contents 5
- Chapter10.AdditionalService 6
- Information.............113 6
- AppendixA.Notices.........117 6
- Index.................119 6
- Chapter1.Aboutthismanual 7
- Chapter2.Safetyinformation 9
- Safetyinspectionguide 11
- Groundingrequirements 12
- Chapter2.Safetyinformation7 13
- .Safetyinformation9 15
- Chapter2.Safetyinformation11 17
- .Safetyinformation13 19
- .Safetyinformation15 21
- Chapter2.Safetyinformation17 23
- ≥18kg≥32kg≥55kg 25
- .Safetyinformation21 27
- Chapter2.Safetyinformation25 31
- Chapter3.Generalinformation 35
- Chapter3.Generalinformation31 37
- Chapter4.GeneralCheckout 39
- Basictroubleshooting 41
- Troubleshootingprocedure 42
- Troubleshooting 43
- Audioproblems 44
- CDproblems 45
- DVDproblems 46
- Intermittentproblems 47
- Monitorproblems 49
- Theimageappearstobeickering 50
- Theimageisdiscolored 50
- Networkingproblems 51
- AwirelessLANproblem 52
- Optionproblems 53
- Performanceandlockupproblems 54
- Printerproblems 56
- Serialportproblems 56
- Softwareproblems 57
- USBproblems 58
- Diagnostics 58
- LenovoSolutionCenter 58
- Viewingandchangingsettings 61
- Usingpasswords 61
- Passwordconsiderations 62
- Power-OnPassword 62
- AdministratorPassword 62
- HardDiskPassword 62
- Enablingordisablingadevice 63
- Selectingastartupdevice 63
- EnablingErPcompliancemode 64
- ExitingtheSetupUtilityprogram 65
- Chapter7.Symptom-to-FRUIndex 67
- POSTerrorcodes 68
- Miscellaneouserrorconditions 69
- Undeterminedproblems 71
- Chapter8.Locations 73
- LocatingmajorFRUsandCRUs 75
- LookingupFRUinformation 76
- Locatingpartsonthesystemboard 77
- Chapter9.ReplacingFRUs 79
- Removingthecomputercover 80
- Information”onpage1 81
- Attention: 81
- .ReplacingFRUs77 83
- ReplacingtherearI/Oshielding 84
- RemovingtherearI/Oshielding 84
- InstallingtherearI/Oshielding 84
- Replacingtheharddiskdrive 85
- Removingtheharddiskdrive 85
- Installingaharddiskdrive 86
- Replacingtheopticaldrive 87
- Removingtheopticaldrive 88
- Installinganopticaldrive 88
- Replacingthememorymodule 89
- Removingthememorymodule 90
- Installingamemorymodule 90
- Chapter9.ReplacingFRUs87 93
- 2byliftingupthetabonthe 95
- Chapter9.ReplacingFRUs89 95
- Chapter9.ReplacingFRUs91 97
- Replacingthesystemboard 98
- Removingthesystemboard 98
- Installingasystemboard 99
- Replacingtheinternalspeakers 100
- Removingtheinternalspeakers 100
- Installinginternalspeakers 100
- ReplacingtherearI/Oassembly 101
- RemovingtherearI/Oassembly 101
- InstallingarearI/Oassembly 102
- Replacingtheinverter 103
- Removingtheinverter 104
- Installinganinverter 105
- Replacingthebattery 106
- Removingthebattery 106
- Installingabattery 107
- Chapter9.ReplacingFRUs103 109
- ReplacingtheLCDpanel 111
- RemovingtheLCDpanel 111
- InstallinganLCDpanel 112
- ReplacingtheWIFIcard 113
- RemovingtheWIFIcard 113
- InstallingtheWIFIcard 114
- Installingacomputerwallmount 115
- CompletingtheFRUinstallation 115
- Installingacomputercover 116
- Installingacomputerstand 116
- .ReplacingFRUs111 117
- ©CopyrightLenovo2012 119
- Powermanagement 122
- AutomaticPower-Onfeatures 122
- AppendixA.Notices 123
- Televisionoutputnotice 124
- EuropeanconformanceCEmark 124
- Trademarks 124
- PartNumber: 128
- PrintedinUSA 128
- (1P)P/N: 128
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