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•AdministratorPassword
•HardDiskPassword
Youdonothavetosetanypasswordstouseyourcomputer.However,usingpasswordsimproves
computingsecurity.Ifyoudecidetosetanypasswords,readthefollowingsections.
Passwordconsiderations
Apasswordcanbeanycombinationofupto64alphabeticandnumericcharacters.Forsecurityreasons,it
isrecommendedtouseastrongpasswordthatcannotbeeasilycompromised.Tosetastrongpassword,
usethefollowingguidelines:
•Haveatleasteightcharactersinlength
•Containatleastonealphabeticcharacterandonenumericcharacter
•SetupUtilityprogramandharddiskdrivepasswordsarenotcasesensitive
•Notbeyournameoryourusername
•Notbeacommonwordoracommonname
•Besignificantlydifferentfromyourpreviouspasswords
Power-OnPassword
WhenaPower-OnPasswordisset,youarepromptedtotypeavalidpasswordeachtimethecomputeris
turnedon.Thecomputercannotbeuseduntilthevalidpasswordistypedin.
AdministratorPassword
SettinganAdministratorPassworddetersunauthorizedusersfromchangingconfigurationsettings.Ifyou
areresponsibleformaintainingtheconfigurationsettingsofseveralcomputers,youmightwanttosetan
AdministratorPassword.
WhenanAdministratorPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyoutryto
accesstheSetupUtilityprogram.TheSetupUtilityprogramcannotbeaccesseduntilavalidpassword
istypedin.
IfboththePower-OnPasswordandAdministratorPasswordareset,youcantypeeitherpassword.However,
youmustuseyourAdministratorPasswordtochangeanyconfigurationsettings.
HardDiskPassword
SettingaHardDiskPasswordpreventsunauthorizedaccesstothedataontheharddiskdrive.Whena
HardDiskPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyoutrytoaccessthe
harddiskdrive.
Notes:
•AfteryousetaHardDiskPassword,yourdataontheharddiskdriveisprotectedeveniftheharddisk
driveisremovedfromonecomputerandinstalledinanother.
•IftheHardDiskPasswordisforgotten,thereisnowaytoresetthepasswordorrecoverdatafromthe
harddiskdrive.
Setting,changing,anddeletingapassword
Toset,change,ordeleteapassword,dothefollowing:
1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.
78ThinkCentreE73UserGuide
- ThinkCentreE73 1
- UserGuide 1
- ThirdEdition(June2014) 2
- Contents 3
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Lasercompliancestatement 10
- Powersupplystatement 11
- Cleaningandmaintenance 11
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specifications 17
- Lenovoprograms 17
- Chapter1.Productoverview7 19
- Locations 21
- 10ThinkCentreE73UserGuide 22
- .Productoverview11 23
- Locatingcomponents 24
- Locatingpartsonthesystemboard 25
- Locatinginternaldrives 26
- Machinetypeandmodellabel 26
- .Productoverview15 27
- 16ThinkCentreE73UserGuide 28
- Chapter2.Usingyourcomputer 29
- NavigatingonWindows8 30
- NavigatingonWindows8.1 31
- UsingWindowsshortcutkeys 33
- Usingthewheelmouse 33
- Adjustingaudio 33
- Aboutyourcomputeraudio 34
- UsingCDsandDVDs 35
- PlayingaCDorDVD 35
- RecordingaCDorDVD 36
- Chapter3.Youandyourcomputer 37
- Glareandlighting 38
- Aircirculation 38
- Accessibilityinformation 38
- Chapter3.Youandyourcomputer27 39
- Chapter3.Youandyourcomputer29 41
- Registeringyourcomputer 42
- Chapter4.Security 43
- Lockingthecomputercover 44
- Usingpasswords 45
- BIOSpasswords 45
- Windowspasswords 46
- Usingandunderstandingfirewalls 46
- Protectingdataagainstviruses 46
- Installingorreplacinghardware 47
- Installingexternaloptions 47
- Removingthecomputercover 47
- 1asshownto 52
- 42ThinkCentreE73UserGuide 54
- Replacingthebattery 55
- Replacingtheopticaldrive 58
- Replacingthemicroprocessor 64
- 2onthemicroprocessor 65
- Replacingtherearfanassembly 67
- ReplacingtheWiFiunits 69
- RemovingtheWiFicardmodule 70
- InstallingtheWiFiunits 71
- 60ThinkCentreE73UserGuide 72
- InstallingtherearWiFiantenna 74
- RemovingtherearWiFiantenna 74
- InstallingthefrontWiFiantenna 75
- Replacingthekeyboardormouse 77
- Completingthepartsreplacement 78
- Obtainingdevicedrivers 79
- 68ThinkCentreE73UserGuide 80
- Chapter6.Recoveryinformation 81
- Creatingrecoverymedia 82
- Usingrecoverymedia 82
- Performingabackupoperation 82
- Performingarecoveryoperation 83
- Creatingandusingarescuemedium 84
- Reinstallingsoftwareprograms 86
- Reinstallingdevicedrivers 86
- Solvingrecoveryproblems 86
- Refreshingyourcomputer 87
- Viewingandchangingsettings 89
- Passwordconsiderations 90
- Power-OnPassword 90
- AdministratorPassword 90
- HardDiskPassword 90
- Enablingordisablingadevice 91
- Selectingastartupdevice 92
- EnablingErPLPScompliancemode 92
- ExitingtheSetupUtilityprogram 93
- 82ThinkCentreE73UserGuide 94
- Usingsystemprograms 95
- Chapter9.Preventingproblems 97
- UsingSystemUpdate 98
- Cleaningyourcomputer 99
- Goodmaintenancepractices 100
- Movingyourcomputer 100
- Chapter9.Preventingproblems89 101
- 90ThinkCentreE73UserGuide 102
- Basictroubleshooting 103
- Troubleshootingprocedure 104
- Troubleshooting 104
- Audioproblems 105
- CDproblems 106
- DVDproblems 107
- DVDmoviewillnotplay 108
- Playbackisverysloworchoppy 108
- Intermittentproblems 109
- ThinkCentreE73UserGuide 110
- Monitorproblems 111
- Theimageappearstobeflickering 112
- Theimageisdiscolored 112
- Networkingproblems 113
- Optionproblems 115
- Performanceandlockupproblems 116
- Printerproblems 118
- Serialportproblems 118
- Softwareproblems 119
- USBproblems 120
- Diagnosticprograms 120
- LenovoSolutionCenter 121
- LenovoThinkVantageToolbox 121
- PC-DoctorforDOS 121
- Informationresources 123
- LenovoThinkVantageT ools 123
- HelpandSupport 123
- SafetyandWarranty 123
- LenovoWebsite 123
- LenovoSupportWebsite 124
- Helpandservice 124
- Callingforservice 124
- Usingotherservices 125
- Purchasingadditionalservices 125
- 114ThinkCentreE73UserGuide 126
- AppendixA.Notices 127
- Trademarks 128
- Exportclassificationnotice 129
- Televisionoutputnotice 129
- Electronicemissionsnotices 129
- Eurasiancompliancemark 131
- Brazilregulatorynotice 131
- Mexicoregulatorynotice 131
- ImportantWEEEinformation 133
- RecyclinginformationforJapan 133
- RecyclinginformationforBrazil 134
- 124ThinkCentreE73UserGuide 136
- EuropeanUnionRoHS 137
- ChinaRoHS 137
- TurkishRoHS 137
- UkraineRoHS 138
- IndiaRoHS 138
- AppendixE.ChinaEnergyLabel 139
- 128ThinkCentreE73UserGuide 140
- ©CopyrightLenovo2013,2014 141
- 130ThinkCentreE73UserGuide 142
- 132ThinkCentreE73UserGuide 144
- 134ThinkCentreE73UserGuide 146
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