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Ifyourmemoryisnotoperatingproperly,checkthefollowingitems:
1.Verifythatthememoryisinstalledandseatedcorrectlyinyourcomputer.
Itmaybenecessarytoremovealladdedmemoriestotestthecomputerwithonlythefactory-installed
memories,andthenreinstallthememoryoneatatimetoensureaproperconnection.Forthe
procedurestoremoveandreinstallamemory,referto“Replacingthememorymodule”onpage81.
2.Checkforerrormessagesduringstartup.
FollowtheappropriatecorrectiveactionsforPower-onself-test(POST)listedin“Errormessages”on
page127.
3.VerifythatthelatestsystemBIOS(UEFIBIOS)foryourmodelhasbeeninstalled.
4.Verifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingthememorymodule”onpage81
.
5.RunDiagnosingproblems.
Networking
Thefollowingarethemostcommonnetworkingproblems:
Ethernetproblems
•Problem:Yourcomputercannotconnecttothenetwork.
Solution:Makesurethat:
–Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedbothtotheEthernetconnectorofyourcomputerand
totheRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis
100meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblem
persists,tryadifferentcable.
–Youareusingthecorrectdevicedriver.
1.ClickStart,andthenclickControlPanel.
2.ClickHardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,type
thepasswordorprovideconrmation.
4.Ifthe!markistotheleftoftheadapternameunderNetworkadapters,youmightnotusethe
correctdriverorthedriverisnotenabled.Toupdatethedriver,right-clickthehighlightedadapter.
5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.
–Theswitchportandtheadapterhavethesameduplexsetting.
Ifyouconguredtheadapterforfullduplex,makesuretheswitchportisalsoconguredforfull
duplex.Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlost
connections.
–Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.
•Problem:Theadapterstopsworkingfornoapparentreason.
Solution:Thenetworkdriverlesmaybecorruptormissing.Updatethedriverbyfollowingthe
procedureslistedabovetomakesurethatthecorrectdevicedriverisinstalledintheprecedingproblem.
•Problem:IfyourcomputerisaGigabitEthernetmodelandyouusetheaspeedof1000Mbps,the
connectionfailsorerrorsoccur.
Chapter10.Troubleshootingcomputerproblems131
- UserGuide 1
- FourthEdition(November2011) 2
- ©CopyrightLenovo2011 2
- Contents 3
- Readthisrst 7
- Importantsafetyinformation 8
- Safetyguidelines 9
- Powercordsandpoweradapters 10
- Plugsandoutlets 11
- Powersupplystatement 11
- Externaldevices 12
- Heatandproductventilation 13
- Liquidcrystaldisplaynotice 14
- Usingheadphonesorearphones 15
- Additionalsafetyinformation 15
- Chapter1.Productoverview 17
- Frontview 18
- Right-sideview 21
- Left-sideview 22
- Bottomview 23
- Rearview 24
- Statusindicators 25
- Powerstatusindicator 26
- 1Sleepstatusindicator 27
- 2Batterystatusindicator 27
- Chapter1.Productoverview11 27
- Machinetypeandmodellabel 28
- .Productoverview13 29
- CerticateofAuthenticitylabel 30
- Features 30
- Chapter1.Productoverview15 31
- Specications 32
- Operatingenvironment 32
- ThinkVantageTechnologies 33
- AccessConnections 35
- ActiveProtectionSystem 35
- ClientSecuritySolution 35
- FingerprintSoftware 35
- LenovoSolutionCenter 35
- LenovoThinkVantageTools 36
- LenovoThinkVantageToolbox 36
- MessageCenterPlus 36
- PasswordManager 36
- PowerManager 36
- ProductRecovery 37
- RescueandRecovery 37
- SystemUpdate 37
- 22UserGuide 38
- Chapter2.Usingyourcomputer 39
- InstantMediaMode 41
- Specialkeysandbuttons 42
- ThinkVantagebutton 42
- Functionkeycombinations 42
- Chapter2.Usingyourcomputer27 43
- Volumeandmutebuttons 44
- 1Microphonemute 45
- 2Volumecontrolbutton 45
- 3Speakermutebutton 45
- Chapter2.Usingyourcomputer29 45
- Usingthetouchpad 48
- Powermanagement 50
- Checkingbatterystatus 51
- Usingtheacpoweradapter 51
- Chargingthebattery 51
- Maximizingbatterylife 52
- Managingyourbatterypower 52
- Power-savingmodes 52
- Connectingtothenetwork 53
- Ethernetconnections 53
- Wirelessconnections 54
- UsingwirelessWANconnections 55
- UsingBluetooth 56
- Chapter2.Usingyourcomputer41 57
- UsingWiMAX 58
- Chapter2.Usingyourcomputer43 59
- Usinganexternaldisplay 60
- Changingdisplaysettings 60
- Connectinganexternaldisplay 60
- Chapter2.Usingyourcomputer45 61
- Usingdualdisplays 62
- Usingacolorprole 63
- Usingaudiofeatures 63
- Usinganintegratedcamera 64
- Usingthemediacardreader 64
- Insertingaashmediacard 65
- Removingaashmediacard 65
- 50UserGuide 66
- Chapter3.Youandyourcomputer 67
- Adjustingyourcomputertotyou 68
- Accessibilityinformation 69
- FullScreenMagnierfunction 69
- Travelingwithyourcomputer 70
- Traveltips 70
- Travelaccessories 70
- Chapter4.Security 71
- Passwordsandsleepmode 72
- Typingpasswords 72
- Power-onpassword 72
- Harddiskpasswords 73
- Supervisorpassword 75
- Harddisksecurity 77
- Settingthesecuritychip 77
- Usingangerprintreader 79
- Chapter4.Security65 81
- Usingandunderstandingrewalls 82
- Protectingdataagainstviruses 83
- 68UserGuide 84
- Chapter5.Recoveryoverview 85
- Creatingrecoverymedia 86
- Usingrecoverymedia 86
- Performingabackupoperation 86
- Performingarecoveryoperation 87
- Creatingandusingarescuemedium 88
- Creatingarescuemedium 88
- Usingarescuemedium 88
- Chapter5.Recoveryoverview73 89
- Solvingrecoveryproblems 90
- Chapter6.Replacingdevices 91
- Chapter6.Replacingdevices77 93
- Replacingthekeyboard 94
- Chapter6.Replacingdevices79 95
- Replacingthememorymodule 97
- Chapter6.Replacingdevices83 99
- Chapter6.Replacingdevices85 101
- Chapter6.Replacingdevices87 103
- Replacingthebackupbattery 105
- ReplacingtheSIMcard 106
- Chapter6.Replacingdevices91 107
- 92UserGuide 108
- ThinkPadBattery39+topview 109
- FindingThinkPadoptions 109
- ThinkPadBattery39+bottomview 110
- AttachingaThinkPadBattery39+ 110
- .Enhancingyourcomputer95 111
- DetachingaThinkPadBattery39+ 112
- ChargingaThinkPadBattery39+ 113
- 98UserGuide 114
- Chapter8.Advancedconguration 115
- InstallingWindows7 116
- Installingdevicedrivers 117
- InstallingthedriverforUSB3.0 117
- Installingotherdevicedrivers 118
- ThinkPadSetup 118
- Congmenu 119
- Date/Timemenu 120
- Securitymenu 120
- Startupmenu 121
- 3ontherearsideofyourcomputer 122
- 2ontherearsideofyourcomputer 122
- 1ontheleftsideofyourcomputer 122
- Restartmenu 123
- ThinkPadSetupitems 123
- 108UserGuide 124
- .Advancedconguration109 125
- 110UserGuide 126
- Securitymenuitems 127
- .Advancedconguration111 127
- 112UserGuide 128
- .Advancedconguration113 129
- Startupmenuitems 130
- 114UserGuide 130
- UpdatingyoursystemUEFIBIOS 131
- Usingsystemmanagement 132
- Systemmanagement 132
- Settingmanagementfeatures 133
- Chapter9.Preventingproblems 135
- Takingcareofyourcomputer 137
- 124UserGuide 140
- Diagnosingproblems 141
- Troubleshooting 142
- Computerstopsresponding 142
- Spillsonthekeyboard 142
- Errormessages 143
- Errorswithoutmessages 145
- Beeperrors 146
- Memoryproblems 146
- Networking 147
- AwirelessLANproblem 148
- AwirelessWANproblem 148
- Bluetoothproblems 148
- Displayandmultimediadevices 149
- Computerscreenproblems 150
- Externalmonitorproblems 151
- Audioproblems 153
- Fingerprintreaderproblems 154
- Batteryandpower 155
- Powerproblems 156
- Apowerbuttonproblem 156
- Startupproblems 156
- Sleepandhibernationproblems 157
- Drivesandotherstoragedevices 158
- Softwareproblems 158
- Portsandconnectors 159
- 144UserGuide 160
- Chapter11.Gettingsupport 161
- Gettinghelpandservice 162
- Usingdiagnosticprograms 162
- LenovoSupportWebsite 162
- CallingLenovo 163
- Purchasingadditionalservices 163
- 148UserGuide 164
- Wirelessrelatedinformation 165
- 3WirelessLANantenna(Third) 166
- Exportclassicationnotice 167
- Electronicemissionnotices 167
- Directive 168
- 0800-666-975 169
- 154UserGuide 170
- ImportantWEEEinformation 171
- Japanrecyclingstatements 171
- RecyclinginformationforBrazil 172
- 158UserGuide 174
- AppendixC.Notices 175
- Trademarks 176
- ChinaRoHS 177
- TurkishRoHS 177
- UkraineRoHS 177
- IndiaRoHS 178
- PartNumber: 180
- Printedin 180
- (1P)P/N: 180
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