Lenovo ThinkCentre E73 User Guide [en, br, bs, uk]

ThinkCentreE73
UserGuide

MachineTypes:10AS,10AV,10DR,and10DS

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandthe

“Importantsafetyinformation”onpagev

andAppendixA“Notices”onpage115.

FifthEdition(July2015)

©CopyrightLenovo2013,2015.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration
“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925.

Contents

Importantsafetyinformation......v

Serviceandupgrades.............v

Staticelectricityprevention...........v

Powercordsandpoweradapters........vi

Extensioncordsandrelateddevices.......vi

Plugsandoutlets..............vii

Externaldevices..............vii

Heatandproductventilation.........vii

Operatingenvironment...........viii

Lasercompliancestatement.........viii

Powersupplystatement............ix

Cleaningandmaintenance...........ix

Chapter1.Productoverview......1

Features..................1

Specifications................5

Lenovoprograms..............5

Accessingaprogramonyourcomputer....5

AnintroductiontoLenovoprograms.....6

Locations..................8

Locatingconnectors,controls,andindicators

onthefrontofyourcomputer........9

Locatingconnectorsontherearofyour

computer...............10

Locatingcomponents..........11

Locatingpartsonthesystemboard....12

Locatinginternaldrives.........13

Machinetypeandmodellabel.......13

Chapter2.Usingyourcomputer...15

Frequentlyaskedquestions.........15

NavigatingamongscreensontheWindows8and

Windows8.1operatingsystems........15

NavigatingonWindows8........15

NavigatingonWindows8.1........17

AccessingControlPanelontheWindows8or

Windows8.1operatingsystem........18

UsingWindowsshortcutkeys.........18

Usingthewheelmouse...........19

Settingthecomputervolume.........19

AddinganicontotheWindowsnotificationarea.19

UsingCDsandDVDs............20

HandlingandstoringCDandDVDmedia..20

PlayingaCDorDVD..........21

RecordingaCDorDVD.........21

Chapter3.Youandyourcomputer..23

Accessibilityandcomfort..........23

Arrangingyourworkspace........23

Comfort...............23

Glareandlighting............24

Aircirculation.............24

Electricaloutletsandcablelengths.....24

Accessibilityinformation.........24

Registeringyourcomputer..........27

Movingyourcomputertoanothercountryor

region..................27

Chapter4.Security..........29

Securityfeatures..............29

Lockingthecomputercover.........30

AttachingaKensington-stylecablelock.....31

Preventingunauthorizedaccesstoyour

computer.................31

Usingfingerprintauthentication........32

Usingandunderstandingfirewalls.......32

Protectingdataagainstviruses........32

Chapter5.Installingorreplacing

hardware...............33

Handlingstatic-sensitivedevices.......33

Installingorreplacinghardware........33

Installingexternaloptions........33

Removingthecomputercover.......33

Removingandreinstallingthefrontbezel..34

InstallingorreplacingaPCIExpresscard..36

Installingorreplacingamemorymodule...39

Replacingthebattery..........41

Replacingtheprimaryharddiskdrive....42

Replacingtheopticaldrive........44

Replacingthepowersupplyassembly...46

Replacingtheheatsinkandfanassembly..48

Replacingthemicroprocessor.......50

ReplacingthefrontaudioandUSB

assembly...............52

Replacingtherearfanassembly......53

ReplacingtheWiFiunits.........55

InstallingorremovingtherearWiFiantenna.60

InstallingorremovingthefrontWiFiantenna.61

Replacingthekeyboardormouse.....63

Completingthepartsreplacement.....64

Chapter6.Recoveryinformation...67

RecoveryinformationfortheWindows7operating

system..................67

Creatingandusingrecoverymedia.....67

©CopyrightLenovo2013,2015

i

Performingbackupandrecoveryoperations.68
UsingtheRescueandRecoveryworkspace.69

Creatingandusingarescuemedium....70

Reinstallingpreinstalledapplicationsand

devicedrivers.............71

Reinstallingsoftwareprograms......72

Reinstallingdevicedrivers........72

Solvingrecoveryproblems........72

RecoveryinformationfortheWindows8or

Windows8.1operatingsystem........73

Refreshingyourcomputer........73

Resettingyourcomputertothefactorydefault

settings................73

Usingtheadvancedstartupoptions....73

RecoveringyouroperatingsystemifWindows

8orWindows8.1failstostart.......74

RecoveryinformationfortheWindows10operating

system..................74

Chapter7.UsingtheSetupUtility

program................77

StartingtheSetupUtilityprogram.......77

Viewingandchangingsettings........77

UsingBIOSpasswords...........77

Passwordconsiderations.........78

Power-OnPassword..........78

AdministratorPassword.........78

HardDiskPassword...........78

Setting,changing,anddeletingapassword.78
Erasinglostorforgottenpasswords(clearing

CMOS)................79

Enablingordisablingadevice........79

Selectingastartupdevice..........79

Selectingatemporarystartupdevice....80

Selectingorchangingthestartupdevice

sequence...............80

EnablingErPLPScompliancemode......80

ExitingtheSetupUtilityprogram.......81

Chapter8.Updatingsystem

programs...............83

Usingsystemprograms...........83

UpdatingtheBIOS.............83

RecoveringfromaPOST/BIOSupdatefailure..83

Chapter9.Preventingproblems...85

Keepingyourcomputercurrent........85

Gettingthelatestdevicedriversforyour

computer...............85

Gettingthelatestsystemupdates.....85

Cleaningandmaintenance..........86

Basics................86

Cleaningyourcomputer.........86

Goodmaintenancepractices.......87

Movingyourcomputer...........88

Chapter10.Troubleshootingand

diagnostics..............91

Basictroubleshooting............91

Troubleshootingprocedure..........92

Troubleshooting..............93

Audioproblems............93

CDproblems.............94

DVDproblems.............95

Intermittentproblems..........97

Keyboard,mouse,orpointingdevice

problems...............97

Monitorproblems............99

Networkingproblems..........101

Optionproblems............103

Performanceandlockupproblems.....104

Printerproblems............106

Serialportproblems...........106

Softwareproblems...........106

USBproblems.............108

Diagnosticprograms............108

LenovoSolutionCenter.........108

LenovoThinkVantageT oolbox.......109

PC-DoctorforDOS...........109

Chapter11.Gettinginformation,help,

andservice.............111

Informationresources............111

LenovoThinkVantageT ools........111

Windowshelpsystem..........111

SafetyandWarranty...........111

LenovoWebsite............111

LenovoSupportWebsite.........112

Helpandservice..............112

Usingthedocumentationanddiagnostic

programs...............112

Callingforservice............112

Usingotherservices..........113

Purchasingadditionalservices......113

AppendixA.Notices.........115

Trademarks................116

AppendixB.Regulatory

information.............117

Exportclassificationnotice..........117

Televisionoutputnotice...........117

Electronicemissionsnotices.........117

FederalCommunicationsCommission

DeclarationofConformity........117

iiThinkCentreE73UserGuide

Eurasiancompliancemark..........119

Brazilaudionotice.............119

Mexicowireless-radiocomplianceinformation..119

Additionalregulatoryinformation.......120

AppendixC.WEEEandrecycling

information.............121

ImportantWEEEinformation.........121

RecyclinginformationforJapan........121

RecyclinginformationforBrazil........122

BatteryrecyclinginformationforT aiwan.....122

BatteryrecyclinginformationfortheEuropean

Union..................122

AppendixD.RestrictionofHazardous

SubstancesDirective(RoHS)....125

EuropeanUnionRoHS...........125

ChinaRoHS................125

TurkishRoHS...............125

UkraineRoHS...............126

IndiaRoHS................126

AppendixE.ChinaEnergyLabel..127

AppendixF .ENERGYSTARmodel

information.............129

Index.................131

©CopyrightLenovo2013,2015

iii

ivThinkCentreE73UserGuide

Importantsafetyinformation

CAUTION:
Beforeusingthismanual,besuretoreadandunderstandalltherelatedsafetyinformationforthis
product.RefertotheinformationinthissectionandthesafetyinformationintheSafety,Warranty,and
SetupGuidethatyoureceivedwiththisproduct.Readingandunderstandingthissafetyinformation
reducestheriskofpersonalinjuryanddamagetoyourproduct.

IfyounolongerhaveacopyoftheSafety,Warranty,andSetupGuide,youcanobtainaPortableDocument
Format(PDF)versionfromtheLenovo
LenovoSupportWebsitealsoprovidestheSafety,Warranty,andSetupGuideandthisUserGuidein
additionallanguages.

®

SupportWebsiteathttp://www.lenovo.com/UserManuals.The

Serviceandupgrades

DonotattempttoserviceaproductyourselfunlessinstructedtodosobytheCustomerSupportCenteror
yourdocumentation.OnlyuseaServiceProviderwhoisapprovedtorepairyourparticularproduct.

Note:Somecomputerpartscanbeupgradedorreplacedbythecustomer.Upgradestypicallyare
referredtoasoptions.ReplacementpartsapprovedforcustomerinstallationarereferredtoasCustomer
ReplaceableUnits,orCRUs.Lenovoprovidesdocumentationwithinstructionswhenitisappropriatefor
customerstoinstalloptionsorreplaceCRUs.Y oumustcloselyfollowallinstructionswheninstallingor
replacingparts.TheOffstateofapowerindicatordoesnotnecessarilymeanthatvoltagelevelsinsidea
productarezero.Beforeyouremovethecoversfromaproductequippedwithapowercord,alwaysmake
surethatthepoweristurnedoffandthattheproductisunpluggedfromanypowersource.Formore
informationonCRUs,refertoChapter5“Installingorreplacinghardware”onpage33
questionsorconcerns,contacttheCustomerSupportCenter.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafety.

CAUTION:

.Ifyouhaveany

Hazardousmovingparts.Keepfingersandotherbodypartsaway.

CAUTION:

Beforeyouopenthecomputercover,turnoffthecomputerandwaitseveralminutesuntilthe
computeriscool.

Staticelectricityprevention

Staticelectricity,althoughharmlesstoyou,canseriouslydamagecomputercomponentsandoptions.
Improperhandlingofstatic-sensitivepartscancausedamagetothepart.Whenyouunpackanoption

©CopyrightLenovo2013,2015

v

orCRU,donotopenthestatic-protectivepackagecontainingthepartuntiltheinstructionsdirectyou
toinstallit.

WhenyouhandleoptionsorCRUs,orperformanyworkinsidethecomputer,takethefollowingprecautions
toavoidstatic-electricitydamage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayshandlecomponentscarefully.Handleadapters,memorymodules,andothercircuitboardsbythe

edges.Nevertouchexposedcircuitry.

•Preventothersfromtouchingcomponents.

•Whenyouinstallastatic-sensitiveoptionorCRU,touchthestatic-protectivepackagecontainingthe

parttoametalexpansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwo
seconds.Thisreducesstaticelectricityinthepackageandyourbody.

•Whenpossible,removethestatic-sensitivepartfromthestatic-protectivepackagingandinstallthepart

withoutsettingitdown.Whenthisisnotpossible,placethestatic-protectivepackagingonasmooth,
levelsurfaceandplacethepartonit.

•Donotplacethepartonthecomputercoverorothermetalsurface.

Powercordsandpoweradapters

Useonlythepowercordsandpoweradapterssuppliedbytheproductmanufacturer.Donotusetheac
powercordforotherdevices.

Thepowercordsshallbesafetyapproved.ForGermany,itshallbeH05VV-F,3G,0.75mm
othercountries,thesuitabletypesshallbeusedaccordingly.

Neverwrapapowercordaroundapoweradapterorotherobject.Doingsocanstressthecordinwaysthat
cancausethecordtofray,crack,orcrimp.Thiscanpresentasafetyhazard.

Alwaysroutepowercordssothattheywillnotbewalkedon,trippedover,orpinchedbyobjects.

Protectpowercordandpoweradaptersfromliquids.Forinstance,donotleaveyourpowercordorpower
adapternearsinks,tubs,toilets,oronfloorsthatarecleanedwithliquidcleansers.Liquidscancausea
shortcircuit,particularlyifthepowercordorpoweradapterhasbeenstressedbymisuse.Liquidsalsocan
causegradualcorrosionofpowercordterminalsand/ortheconnectorterminalsonapoweradapter,
whichcaneventuallyresultinoverheating.

Ensurethatallpowercordconnectorsaresecurelyandcompletelypluggedintoreceptacles.

Donotuseanypoweradapterthatshowscorrosionattheacinputpinsorshowssignsofoverheating(such
asdeformedplastic)attheacinputoranywhereonthepoweradapter.

Donotuseanypowercordswheretheelectricalcontactsoneitherendshowsignsofcorrosionor
overheatingorwherethepowercordappearstohavebeendamagedinanyway.

2

,orbetter.For

Extensioncordsandrelateddevices

Ensurethatextensioncords,surgeprotectors,uninterruptiblepowersupplies,andpowerstripsthatyouuse
areratedtohandletheelectricalrequirementsoftheproduct.Neveroverloadthesedevices.Ifpowerstrips
areused,theloadshouldnotexceedthepowerstripinputrating.Consultanelectricianformoreinformation
ifyouhavequestionsaboutpowerloads,powerrequirements,andinputratings.

viThinkCentreE73UserGuide

Plugsandoutlets

Ifareceptacle(poweroutlet)thatyouintendtousewithyourcomputerequipmentappearstobedamaged
orcorroded,donotusetheoutletuntilitisreplacedbyaqualifiedelectrician.

Donotbendormodifytheplug.Iftheplugisdamaged,contactthemanufacturertoobtainareplacement.

Donotshareanelectricaloutletwithotherhomeorcommercialappliancesthatdrawlargeamountsof
electricity;otherwise,unstablevoltagemightdamageyourcomputer,data,orattacheddevices.

Someproductsareequippedwithathree-prongedplug.Thisplugfitsonlyintoagroundedelectricaloutlet.
Thisisasafetyfeature.Donotdefeatthissafetyfeaturebytryingtoinsertitintoanon-groundedoutlet.If
youcannotinserttheplugintotheoutlet,contactanelectricianforanapprovedoutletadapterortoreplace
theoutletwithonethatenablesthissafetyfeature.Neveroverloadanelectricaloutlet.Theoverallsystem
loadshouldnotexceed80percentofthebranchcircuitrating.Consultanelectricianformoreinformation
ifyouhavequestionsaboutpowerloadsandbranchcircuitratings.

Besurethatthepoweroutletyouareusingisproperlywired,easilyaccessible,andlocatedclosetothe
equipment.Donotfullyextendpowercordsinawaythatwillstressthecords.

Besurethatthepoweroutletprovidesthecorrectvoltageandcurrentfortheproductyouareinstalling.

Carefullyconnectanddisconnecttheequipmentfromtheelectricaloutlet.

Externaldevices

DonotconnectordisconnectanyexternaldevicecablesotherthanUniversalSerialBus(USB)and1394
cableswhilethecomputerpowerison;otherwise,youmightdamageyourcomputer.Toavoidpossible
damagetoattacheddevices,waitatleastfivesecondsafterthecomputerisshutdowntodisconnect
externaldevices.

Heatandproductventilation

Computers,poweradapters,andmanyaccessoriescangenerateheatwhenturnedonandwhenbatteries
arecharging.Alwaysfollowthesebasicprecautions:

•Donotleaveyourcomputer,poweradapter,oraccessoriesincontactwithyourlaporanypartofyour
bodyforanextendedperiodwhentheproductsarefunctioningorwhenthebatteryischarging.Your
computer,poweradapter,andmanyaccessoriesproducesomeheatduringnormaloperation.Extended
contactwiththebodycouldcausediscomfortor,potentially,askinburn.

•Donotchargethebatteryoroperateyourcomputer,poweradapter,oraccessoriesnearflammable
materialsorinexplosiveenvironments.

•Ventilationslots,fans,andheatsinksareprovidedwiththeproductforsafety,comfort,andreliable
operation.Thesefeaturesmightinadvertentlybecomeblockedbyplacingtheproductonabed,sofa,
carpet,orotherflexiblesurface.Neverblock,cover,ordisablethesefeatures.

Inspectyourdesktopcomputerfordustaccumulationatleastonceeverythreemonths.Beforeinspecting
yourcomputer,turnoffthepowerandunplugthecomputer'spowercordfromtheelectricaloutlet;then
removeanydustfromventsandperforationsinthebezel.Ifyounoticeexternaldustaccumulation,then
examineandremovedustfromtheinsideofthecomputerincludingheatsinkinletfins,powersupplyvents,
andfans.Alwaysturnoffandunplugthecomputerbeforeopeningthecover.Ifpossible,avoidoperating
yourcomputerwithintwofeetofhigh-trafficareas.Ifyoumustoperateyourcomputerinornearahigh-traffic
area,inspectand,ifnecessary,cleanyourcomputermorefrequently.

©CopyrightLenovo2013,2015

vii

Foryoursafetyandtomaintainoptimumcomputerperformance,alwaysfollowthesebasicprecautions
withyourdesktopcomputer:

•Keepthecoverclosedwheneverthecomputerispluggedin.

•Regularlyinspecttheoutsideofthecomputerfordustaccumulation.

•Removedustfromventsandanyperforationsinthebezel.Morefrequentcleaningsmightberequiredfor
computersindustyorhigh-trafficareas.

•Donotrestrictorblockanyventilationopenings.

•Donotstoreoroperateyourcomputerinsidefurniture,asthismightincreasetheriskofoverheating.

•Airflowtemperaturesintothecomputershouldnotexceed35°C(95°F).

•Donotinstallairfiltrationdevices.Theymayinterferewithpropercooling.

Operatingenvironment

Theoptimalenvironmentinwhichtouseyourcomputeris10°C-35°C(50°F-95°F)withhumidityranging
between35%and80%.Ifyourcomputerisstoredortransportedintemperatureslessthan10°C(50°F),
allowthecoldcomputertoriseslowlytoanoptimaloperatingtemperatureof10°C-35°C(50°F-95°F)before
use.Thisprocesscouldtaketwohoursinextremeconditions.Failuretoallowyourcomputertorisetoan
optimaloperatingtemperaturebeforeusecouldresultinirreparabledamagetoyourcomputer.

Ifpossible,placeyourcomputerinawell-ventilatedanddryareawithoutdirectexposuretosunshine.

Keepelectricalappliancessuchasanelectricfan,radio,high-poweredspeakers,airconditioner,and
microwaveovenawayfromyourcomputerbecausethestrongmagneticfieldsgeneratedbythese
appliancescandamagethemonitoranddataontheharddiskdrive.

Donotplaceanybeveragesontopoforbesidethecomputerorotherattacheddevices.Ifliquidisspilledon
orinthecomputeroranattacheddevice,ashortcircuitorotherdamagemightoccur.

Donoteatorsmokeoveryourkeyboard.Particlesthatfallintoyourkeyboardcancausedamage.

Lasercompliancestatement

CAUTION:
Whenlaserproducts(suchasCD-ROMs,DVDdrives,fiberopticdevices,ortransmitters)are
installed,notethefollowing:

•Donotremovethecovers.Removingthecoversofthelaserproductcouldresultinexposureto
hazardouslaserradiation.Therearenoserviceablepartsinsidethedevice.

•Useofcontrolsoradjustmentsorperformanceofproceduresotherthanthosespecifiedherein
mightresultinhazardousradiationexposure.

DANGER

SomelaserproductscontainanembeddedClass3AorClass3Blaserdiode.Notethefollowing:

Laserradiationwhenopen.Donotstareintothebeam,donotviewdirectlywithoptical
instruments,andavoiddirectexposuretothebeam.

viiiThinkCentreE73UserGuide

Powersupplystatement

Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabelattached.
Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwithoneoftheseparts,
contactaservicetechnician.

Cleaningandmaintenance

Keepyourcomputerandworkspaceclean.Shutdownthecomputerandthendisconnectthepower
cordbeforecleaningthecomputer.Donotsprayanyliquiddetergentdirectlyonthecomputeroruse
anydetergentcontainingflammablematerialtocleanthecomputer.Spraythedetergentonasoftcloth
andthenwipethecomputersurfaces.

©CopyrightLenovo2013,2015

ix

xThinkCentreE73UserGuide

Chapter1.Productoverview

Thischapterprovidesinformationaboutthecomputerfeatures,specifications,softwareprogramsprovided
byLenovo,andlocationsofconnectors,components,partsonthesystemboard,andinternaldrives.

Features

Thissectionintroducesthecomputerfeatures.Theinformationcoversavarietyofmodels.

Toviewtheinformationaboutyourspecificmodel,dooneofthefollowing:

•OntheMicrosoft
toviewtheinformation.

•OntheMicrosoftWindows8orWindows8.1operatingsystem,gotothedesktopandmoveyourpointer
tothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.ThenclickSettings➙PC
infotoviewtheinformation.

•OntheMicrosoftWindows10operatingsystem,clicktheStartbuttontoopentheStartmenu.Then,click

Settings➙System➙Abouttoviewtheinformation.

Microprocessor

Toviewthemicroprocessorinformationofyourcomputer,dothefollowing:

•OntheMicrosoftWindows7operationsystem,clickStart,right-clickComputer,andselectProperties
toviewtheinformation.

•OntheMicrosoftWindows8orWindows8.1operatingsystem,gotothedesktopandmoveyourpointer
tothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.ThenclickSettings➙PC
infotoviewtheinformation.

•OntheMicrosoftWindows10operatingsystem,clicktheStartbuttontoopentheStartmenu.Then,click
Settings➙System➙Abouttoviewtheinformation.

®

Windows

®

7operationsystem,clickStart,right-clickComputer,andselectProperties

Memory

Yourcomputersupportsuptotwodoubledatarate3unbuffereddualinlinememorymodules(DDR3
UDIMMs).

Internaldrives

•Opticaldrive:DVD-ROMorDVD-R(availableonsomemodels)

•Hybriddrive(availableonsomemodels)

•SerialAdvancedT echnologyAttachment(SATA)harddiskdrive

•SATAsolid-statedrive(availableonsomemodels)

Videosubsystem

•IntegratedgraphicsforaVideoGraphicsArray(VGA)connectorandaDisplayPort®connector

•PeripheralComponentInterconnect(PCI)Expressx16graphicscardslotonthesystemboardfora
discretegraphicscard

Audiosubsystem

•Integratedhigh-definition(HD)audio

©CopyrightLenovo2013,2015

1

•Audioline-inconnector,audioline-outconnector,andmicrophoneconnectorontherearpanel

•Microphoneconnectorandheadphoneconnectoronthefrontpanel

•Internalspeaker(installedinsomemodels)

Connectivity

•PCIExpressFaxmodem(somemodels)

Systemmanagementfeatures

•Abilitytostorepower-onself-test(POST)hardwaretestresults

•DesktopManagementInterface(DMI)
DesktopManagementInterfaceprovidesacommonpathforuserstoaccessinformationaboutall

aspectsofacomputer,includingprocessortype,installationdate,attachedprintersandotherperipherals,
powersources,andmaintenancehistory.

•ErPLPScompliancemode
Theenergy-relatedproductsdirective(ErP)lowestpowerstate(LPS)compliancemodereducesthe

consumptionofelectricitywhenyourcomputerisinsleeporoffmode.Formoreinformation,see
“EnablingErPLPScompliancemode”onpage80

.

•PrebootExecutionEnvironment(PXE)
ThePrebootExecutionEnvironmentisanenvironmenttostartcomputersusinganetworkinterface

independentofdatastoragedevices(suchastheharddiskdrive)orinstalledoperatingsystems.

•SystemManagement(SM)BasicInput/OutputSystem(BIOS)andSMsoftware
TheSMBIOSspecificationdefinesdatastructuresandaccessmethodsinaBIOSthatallowsauseror

applicationtostoreandretrieveinformationspecificaboutthecomputerinquestion.

•WakeonLAN
WakeonLANisanEthernetcomputernetworkingstandardthatallowsacomputertobeturnedon

orwokenupbyanetworkmessage.Themessageisusuallysentbyaprogramrunningonanother
computeronthesamelocalareanetwork.

•WakeonRing
WakeonRing,sometimesreferredtoasWakeonModem,isaspecificationthatallowssupported

computersanddevicestoresumefromsleeporhibernationmode.

•WindowsManagementInstrumentation(WMI)
WindowsManagementInstrumentationisasetofextensionstotheWindowsDriverModel.Itprovidesan

operatingsysteminterfacethroughwhichinstrumentedcomponentsprovideinformationandnotification.

2ThinkCentreE73UserGuide

Input/Output(I/O)features

•OneDisplayPortconnector

•OneEthernetconnector

•One9-pinserialport(optional)

•OneVGAmonitorconnector

•SixUniversalSerialBus(USB)connectors

–TwoUSB2.0connectorsonthefrontpanel
–TwoUSB2.0connectorsontherearpanel
–TwoUSB3.0connectorsontherearpanel

•Threeaudioconnectorsontherearpanel(audioline-inconnector,audioline-outconnector,and
microphoneconnector)

•Twoaudioconnectorsonthefrontpanel(microphoneconnectorandheadphoneconnector)

Formoreinformation,see“Locatingconnectors,controls,andindicatorsonthefrontofyourcomputer”on
page9

and“Locatingconnectorsontherearofyourcomputer”onpage10.

Expansion

•Oneharddiskdrivebay

•Oneopticaldrivebay

•Onesecondarysolid-statedrivebay(optional)

•Oneslimcardreaderdrivebay

•OnePCIExpressx16graphicscardslot

•TwoPCIExpressx1cardslots

Powersupply

Yourcomputercomeswithoneofthefollowingpowersupplies:

•180-wattautomaticvoltage-sensingpowersupply

•280-wattautomaticvoltage-sensingpowersupply

Securityfeatures

•ComputraceAgentsoftwareembeddedinfirmware

•Abilitytoenableordisableadevice

•AbilitytoenableanddisableUSBconnectorsindividually

•Power-onpassword(POP),administratorpassword,andharddiskdrivepasswordtodeterunauthorized
useofyourcomputer

•Startupsequencecontrol

•Startupwithoutkeyboardormouse

•SupportforaKensington-stylecablelock

•Supportforapadlock

Formoreinformation,seeChapter4“Security”onpage29

.

Preinstalledsoftwareprograms

Chapter1.Productoverview3

Yourcomputerispreinstalledwithsoftwareprogramstohelpyouworkmoreeasilyandsecurely.Formore
information,see“Lenovoprograms”onpage5

.

Preinstalledoperatingsystem

Yourcomputerispreinstalledwithoneofthefollowingoperatingsystems:

•MicrosoftWindows7operatingsystem

•MicrosoftWindows8operatingsystem

•MicrosoftWindows8.1operatingsystem

•MicrosoftWindows10operatingsystem

Operatingsystem(s),certifiedortestedforcompatibility

•Linux

®

1

(variesbymodeltype)

1.Theoperatingsystem(s)listedherearebeingcertifiedortestedforcompatibilityatthetimethispublicationgoesto
press.AdditionaloperatingsystemsmightbeidentifiedbyLenovoascompatiblewithyourcomputerfollowingthe
publicationofthismanual.Thislistissubjecttochange.Todetermineifanoperatingsystemhasbeencertifiedor
testedforcompatibility,checktheWebsiteoftheoperatingsystemvendor.

4ThinkCentreE73UserGuide

Specifications

Thissectionliststhephysicalspecificationsforyourcomputer.

Dimensions

Width:160mm(6.3inches)
Height:396.5mm(15.6inches)
Depth:399.6mm(15.7inches)

Weight

Maximumconfigurationasshipped:7.5kg(16.5lb)(withoutpackage)
Maximumconfigurationasshipped:10.5kg(23.1lb)(withpackage)

Environment

•Airtemperature:

Operating:10°Cto35°C(50°Fto95°F)
Storageinoriginalshippingpackage:-40°Cto60°C(-40°Fto140°F)
Storagewithoutpackage:-10°Cto60°C(14°Fto140°F)

•Humidity:

Operating:20%to80%(non-condensing)
Storage:20%to90%(non-condensing)

•Altitude:

Operating:-50to10000ft(-15.2to3048m)
Storage:-50to35000ft(-15.2to10668m)

Electricalinput

•Inputvoltage:

–Lowrange:

Minimum:100Vac
Maximum:127Vac
Inputfrequencyrange:50/60Hz
Voltage-selectionswitchsetting:115Vac

–Highrange:

Minimum:200Vac
Maximum:240Vac
Inputfrequencyrange:50/60Hz
Voltage-selectionswitchsetting:230Vac

Lenovoprograms

YourcomputercomeswithLenovoprogramstohelpyouworkmoreeasilyandsecurely.Dependingon
theWindowsoperatingsystempreinstalled,theprogramsmightvary.

Accessingaprogramonyourcomputer

Note:ForWindows7,someoftheLenovoprogramsmightbereadytobeinstalled,soyouneedtoinstall

themmanually.Then,youcanaccessandusetheseprograms.T oinstallaprogramthatisreadytobe
installed,opentheLenovoThinkVantage

®

Toolsprogram,andthenviewtheprogramiconsusingTiles.

Chapter1.Productoverview5

Followtheinstructionsundergreyed-outiconstolocatetheiconforthedesiredprogram.Double-click
theicontoinstalltheprogram.

Toaccessaprogramonyourcomputer,dooneofthefollowing:

•ForWindows7orWindows10:

–FromWindowsSearch:

1.DependingonyourWindowsversion,dooneofthefollowing:

–ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthentypetheprogram

nameintothesearchbox.

–ForWindows10:TypetheprogramnameintothesearchboxnexttotheStartbutton.

2.Inthesearchresults,clickthenameofthedesiredprogramtolaunchtheprogram.

–FromtheStartmenuorControlPanel:

1.ClicktheStartbuttontoopentheStartmenu.Then,clickthenameofthedesiredprogramto
launchtheprogram.

2.Iftheprogramnameisnotdisplayed,clickAllProgramsforWindows7orAllappsforWindows
10todisplaytheprogramlist.Fromthelistorafolderinthelist,clickthenameofthedesired
programtolaunchtheprogram.

3.IftheprogramnameisnotdisplayedontheStartmenu,accesstheprogramfromControlPanel.
a.DependingonyourWindowsversion,dooneofthefollowing:

–ForWindows7:ClickControlPanelontheStartmenu.
–ForWindows10:Right-clicktheStartbuttontoopentheStartcontextmenu,andthen

clickControlPanel.

b.ViewControlPanelusingLargeiconsorSmallicons,andthenclickthenameofthedesired

programtolaunchtheprogram.

•ForWindows8orWindows8.1:

1.PresstheWindowskeytogototheStartscreen.Clickthenameofthedesiredprogramto
launchtheprogram.

2.Ifyoucannotfindtheprogramyouneed,dependingonyourWindowsversion,dooneofthefollowing:

–ForWindows8:Movethepointertothebottom-rightcornerofthescreentodisplaythecharms.

ThenclicktheSearchcharmtosearchforthedesiredprogram.

–ForWindows8.1:Clickthearrowiconinthebottom-leftcornerofthescreentogotothe

Appsscreen.Findthedesiredprogramintheappslistorsearchforitinthesearchboxinthe
top-rightcornerofthescreen.

AnintroductiontoLenovoprograms

ThissectionprovidesinformationaboutthemajorLenovoprogramsavailableonyouroperatingsystem.

Note:Dependingonyourcomputermodel,someofthefollowingprogramsmightnotbeavailable.

•ForWindows7only:

–CreateRecoveryMedia

TheCreateRecoveryMediaprogramenablesyoutorestoreonlytheCdriveortheentirestorage
drivetothefactory-defaultsettings.

–LenovoPowerENGAGE

TheLenovoPowerENGAGEprogramenablesyoutoregisteryourcomputerwithLenovo.

6ThinkCentreE73UserGuide

–MessageCenterPlus

TheMessageCenterPlusprogramautomaticallydisplaysmessagesinformingyouaboutimportant
noticesfromLenovo,suchasalertsonsystemupdatesandalertsonconditionsthatrequireyour
attention.

–RescueandRecovery

®

TheRescueandRecoveryprogramisaone-buttonrecoveryandrestoresolution.Itincludesaset
ofself-recoverytoolstohelpyoudiagnosecomputerproblems,gethelp,andrecoverfromsystem
crashes,evenifyoucannotstarttheWindowsoperatingsystem.

•ForWindows10only:

–LenovoID

TheLenovoIDprogramenablesyoutocreateyourLenovoIDandaccessallsupportedLenovo
programsandwebportalswithsinglesign-on.

•ForWindows8andWindows8.1:

–LenovoSupport

TheLenovoSupportprogramenablesyoutoregisteryourcomputerwithLenovo,checkthecomputer
healthconditionandbatterystatus,downloadandviewusermanualsforyourcomputer,getthe
warrantyinformationofyourcomputer,andexplorehelpandsupportinformation.

•ForWindows7,Windows8,andWindows8.1:

–FingerprintManagerProorThinkVantageFingerprintSoftware

TheFingerprintManagerProorThinkVantageFingerprintSoftwareprogramenablesyoutousea
fingerprintreader.Theintegratedfingerprintreaderprovidedonsomekeyboardsenablesyoutoenroll
yourfingerprintandassociateitwithyourpower-onpassword,harddiskpassword,andWindows
password.Asaresult,fingerprintauthenticationcanreplacepasswordsandenablesimpleandsecure
useraccess.

–PasswordManager

ThePasswordManagerprogramautomaticallycapturesandfillsinauthenticationinformationfor
WindowsprogramsandWebsites.

•ForWindows7,Windows8.1,andWindows10:

–LenovoBluetoothLock

TheLenovoBluetoothLockprogramenablesyoutouseaBluetoothdevice(suchasyoursmartphone)
asaproximity-basedunitforlockingorunlockingyourcomputerautomatically.Bydetectingthe
distancebetweenyourcomputerandthepredefinedBluetoothdevicethatyouarecarrying,theLenovo
BluetoothLockprogramautomaticallylocksyourcomputerwhenyouwalkawayandunlocksyour
computerwhenyoucomeback.Thisisasimplewaytoprotectyourcomputeragainstunauthorized
accessincasethatyouforgettolockyourcomputer.

–PCCloudManager

ThePCCloudManager(PCM)programisabrowser-basedsolutionforclient-computermanagement.
ThePCMprogramhastwocomponents:PCMServerandPCMClient.PCMServerisinstalledon
thecomputer,wheretheadministratorperformsmanagementwork,suchaspowermanagement
andsecuritymanagement.PCMClientisinstalledontheclientcomputerstobemanaged.The
administratorcanlogintoPCMServertomanagecomputerswithPCMClientinstalled,throughthe
InternetWebbrowser.

•ForWindows8,Windows8.1,andWindows10:

Chapter1.Productoverview7

–LenovoCompanion

Yourcomputer’sbestfeaturesandcapabilitiesshouldbeeasytoaccessandunderstand.WithLenovo
Companion,theyare.UseLenovoCompaniontodothefollowing:

–Optimizeyourcomputer’sperformance,monitoryourcomputer’shealth,andmanageupdates.
–Accessyouruserguide,checkwarrantystatus,andviewaccessoriescustomizedforyourcomputer.
–Readhow-toarticles,exploreLenovoforums,andstayup-to-dateontechnologynewswitharticles

andblogsfromtrustedsources.

LenovoCompanionisfilledwithexclusiveLenovocontenttohelpyoulearnmoreaboutwhatyou
candowithyourcomputer.

•ForWindows7,Windows8,Windows8.1,andWindows10:

–LenovoDeviceExperienceorLenovoPCExperience

TheLenovoDeviceExperienceorLenovoPCExperienceprogramhelpsyouworkmoreeasilyand
securely.TheprogramprovideseasyaccesstoLenovoThinkVantageToolsorLenovoTools,important
settingsandinformationaboutyourcomputer,theLenovoSupportWebsite,andsoon.

–LenovoSolutionCenter

TheLenovoSolutionCenterprogramenablesyoutotroubleshootandresolvecomputerproblems.It
combinesdiagnostictests,systeminformationcollection,securitystatus,andsupportinformation,
alongwithhintsandtipsformaximumsystemperformance.

–PowerManager

ThePowerManagerprogramprovidesconvenient,flexible,andcompletepowermanagementfor
yourcomputer.Itenablesyoutoadjustyourcomputerpowersettingstoachievethebestbalance
betweenperformanceandpowersaving.

–REACHitorLenovoReach

TheREACHitorLenovoReachprogramenhancesyourcloudexperience.Thisprogramkeepsyou
connectedatalltimesandenablesyoutoaccessallyourfavoriteitemsfrompersonalcomputers,
smartphones,ortablets.Asaresult,youcanaccess,edit,andshareyourfilesfromanywhere.You
alsocanaddyourfavoriteWebservicestoyourclouddesktopandstaylogged-intoWebsiteswith
thecloudpasswordmanager.

–SHAREitorLenovoSHAREit

TheSHAREitorLenovoSHAREitprogramprovidesaquickandeasywaytosharefilesandfolders
amongcomputers,smartphones,tablets,orsmartTVswiththeAndroidortheWindowsoperating
systeminstalled.SHAREitorLenovoSHAREitusesanytypeofnetworkorevennonetworkatallto
sharefilesandfolders.

–SystemUpdate

TheSystemUpdateprogramprovidesregularaccesstothesystemupdatesforyourcomputer,such
asdevicedriverupdates,softwareupdates,andBIOSupdates.Theprogramgathersinformationfrom
theLenovoHelpCenteraboutnewupdatesforyourcomputer,thensortsanddisplaystheupdatesfor
downloadandinstallation.Y ouhavecompletecontrolofwhichupdatestodownloadandinstall.

Locations

Thissectionprovidesinformationtohelpyoulocatetheconnectorsonthefrontandrearofyourcomputer,
partsonthesystemboard,andcomponentsandinternaldrivesinyourcomputer.

8ThinkCentreE73UserGuide

Locatingconnectors,controls,andindicatorsonthefrontofyour computer

Figure1“Frontconnector,control,andindicatorlocations”onpage9showsthelocationsoftheconnectors,
controls,andindicatorsonthefrontofyourcomputer.

Figure1.Frontconnector,control,andindicatorlocations

1Harddiskdriveactivityindicator2Powerindicator

3Powerbutton

5USB2.0connector(USBconnector1)

7Microphoneconnector

4Opticaldriveeject/closebutton

6Headphoneconnector

8USB2.0connector(USBconnector2)

Chapter1.Productoverview9

Locatingconnectorsontherearofyourcomputer

3

4

5

6

3

4

5 6

Figure2“Rearconnectorlocations”onpage10showsthelocationsoftheconnectorsontherearofyour
computer.Someconnectorsontherearofyourcomputerarecolor-codedtohelpyoudeterminewhereto
connectthecablesonyourcomputer.

Figure2.Rearconnectorlocations

Audioline-inconnector

Audioline-outconnector

DisplayPortconnector

Ethernetconnector

1Powercordconnector2DisplayPortconnector

3VGAmonitorconnector4USB3.0connectors

5USB2.0connectors

6Microphoneconnector

7Audioline-outconnector8Audioline-inconnector

9PCIExpressx16graphicscardslot10PCIExpressx1cardslots(2)

11Security-lockslot

13Optionalserialport

12Padlockloop

14Ethernetconnector

ConnectorDescription

Usedtoreceiveaudiosignalsfromanexternalaudiodevice,suchasastereo
system.Whenyouattachanexternalaudiodevice,acableisconnectedbetween
theaudioline-outconnectorofthedeviceandtheaudioline-inconnectorofthe
computer.

Usedtosendaudiosignalsfromthecomputertoexternaldevices,suchaspowered
stereospeakers(speakerswithbuilt-inamplifiers),headphones,multimedia
keyboards,ortheaudioline-inconnectoronastereosystemorotherexternal
recordingdevice.

Usedtoattachahigh-performancemonitor,adirect-drivemonitor,orotherdevices
thatuseaDisplayPortconnector.

UsedtoattachanEthernetcableforalocalareanetwork(LAN).
Note:TooperatethecomputerwithinFederalCommunicationsCommission(FCC)
ClassBlimits,useaCategory5eorbetterEthernetcable.

10ThinkCentreE73UserGuide

ConnectorDescription

Microphoneconnector

Usedtoattachamicrophonetoyourcomputerwhenyouwanttorecordsoundorif
youusespeech-recognitionsoftware.

USB2.0connectorUsedtoattachadevicethatrequiresaUSB2.0connection,suchasakeyboard,a

mouse,ascanner,aprinter,orapersonaldigitalassistant(PDA).

USB3.0connectorUsedtoattachadevicethatrequiresaUSB2.0or3.0connection,suchasa

keyboard,amouse,ascanner,aprinter,orapersonaldigitalassistant(PDA).A
USB3.0connectorprovideshightransmissionspeedstoreducethetimethatis
requiredfordatatransmission.

VGAmonitorconnectorUsedtoattachaVGAmonitororotherdevicesthatuseaVGAmonitorconnector.

Locatingcomponents

Figure3“Componentlocations”onpage11showsthelocationsofthevariouscomponentsinyour
computer.Toremovethecomputercover,see“Removingthecomputercover”onpage33.

Figure3.Componentlocations

1Heatsinkandfanassembly

3Frontbezel4Harddiskdrive

5PCIExpresscard(availableonsomemodels)6PCIExpressx16graphicscardslot

7Systemboard

2Memorymodules(2)

8Powersupplyassembly

Chapter1.Productoverview11

Locatingpartsonthesystemboard

Figure4“Systemboardpartlocations”onpage12showsthelocationsofthepartsonthesystemboard.

Figure4.Systemboardpartlocations

14-pinpowerconnector2Microprocessor

3Microprocessorfanconnector

5Memoryslot2(DIMM2)

7Powerfanconnector

4Memoryslot1(DIMM1)

6Thermalsensorconnector

8Harddiskdrive/Opticaldrivepowerconnectors(numberand

locationvarybymodel)

914-pinpowerconnector

11SATA3.0connectors

13SATA2.0connector14Frontpanelconnector(forconnectingLEDindicatorsand

10BIOSROM

12Powersupplyfanconnector

thepowerbutton)

15FrontUSBconnector1(forconnectingUSB

ports1and2onthefrontbezel)

17ClearCMOS(ComplementaryMetalOxide

16FrontUSBconnector2(forconnectinganadditionalUSB

device)

18Serialconnector

Semiconductor)/Recoveryjumper

19Frontaudioconnector20Internalspeakerconnector

21PCIExpressx1cardslots(2)22PCIExpressx16graphicscardslot

23Systemfanconnector

24Battery

12ThinkCentreE73UserGuide

Locatinginternaldrives

Internaldrivesaredevicesthatyourcomputerusestoreadandstoredata.Y oucanadddrivestoyour
computertoincreasestoragecapacityandenableyourcomputertoreadothertypesofmedia.Internal
drivesareinstalledinbays.Inthismanual,thebaysarereferredtoasbay1,bay2,andsoon.

Wheninstallingorreplacinganinternaldrive,itisimportanttonotethetypeandsizeofthedrivethatyou
caninstallorreplaceineachbayandcorrectlyconnectthecablestothedriveinstalled.Refertothe
appropriatesectionin“Installingorreplacinghardware”onpage33
replaceinternaldrivesforyourcomputer.

Figure5“Drivebaylocations”onpage13showsthelocationsofthedrivebays.

forinstructionsonhowtoinstallor

Figure5.Drivebaylocations

1Opticaldrivebay(withanopticaldriveinstalledonsomemodels)

2Slimcardreaderdrivebay

3Primaryharddiskdrivebay(witha3.5-inchSATAharddiskdriveinstalled)

4Secondaryharddiskdrivebay(withaSATAsolid-statedriveorahybriddriveinstalledinsomemodels)

Machinetypeandmodellabel

Themachinetypeandmodellabelidentifiesyourcomputer.WhenyoucontactLenovoforhelp,themachine
typeandmodelinformationhelpssupporttechnicianstoidentifyyourcomputerandprovidefasterservice.

Chapter1.Productoverview13

Thefollowingisasampleofthemachinetypeandmodellabel.

Machine Type: XXXX
Model Number: XXX

3

4

5

6

Figure6.Machinetypeandmodellabel

14ThinkCentreE73UserGuide

Chapter2.Usingyourcomputer

Thischapterprovidesinformationonusingsomeofthecomputercomponents.

Frequentlyaskedquestions

Thefollowingareafewtipsthatwillhelpyouoptimizetheuseofyourcomputer.

CanIgetmyuserguideinanotherlanguage?

TheuserguideisavailableinvariouslanguagesontheLenovoSupportWebsiteat:
http://www.lenovo.com/UserManuals

WhereismyrecoverydiscsetorrecoveryUSBkey?

DependingonyourWindowsversion,yourcomputercomeswitharecoverydiscsetorrecovery
USBkey.Ifyourcomputerdoesnotcomewithit,contacttheLenovoCustomerSupportCenterto
orderarecoverydiscsetorrecoveryUSBkey.ForalistofLenovoSupportphonenumbers,goto
http://www.lenovo.com/support/phone.Ifyoucannotfindthesupporttelephonenumberforyourcountry
orregion,contactyourLenovoreseller.

WherecanIfindhelpabouttheWindowsoperatingsystem?

See“Windowshelpsystem”onpage111.

CanIchangetheWindows8.1startupbehaviortoopeneitherthedesktoportheStartscreen?

OntheWindows8.1operatingsystem,youcansetthecomputertoopeneitherthedesktoportheStart
screenbydefault.Tosetthedefaultstartupscreen,dothefollowing:

1.Onthedesktop,moveyourpointertothetaskbaratthebottomofthescreenandright-clickonthe
taskbar.

2.ClickProperties.TheT askbarandNavigationpropertieswindowisdisplayed.

3.OntheNavigationtab,locatetheStartscreensection,andthendooneofthefollowing:

•Tosetthedesktopasyourdefaultstartupscreen,selectWhenIsigninorcloseallappsona

screen,gotothedesktopinsteadofStartsoacheckisvisible.

•TosettheStartscreenasyourdefaultstartupscreen,removethecheckfromtheWhenIsigninor

closeallappsonthescreen,gotodesktopinsteadofStartcheckbox.

4.ClickOKtosavethenewsetting.

ThisfeatureisnotavailableontheWindows8operatingsystem.

NavigatingamongscreensontheWindows8andWindows8.1operating systems

Thissectionprovidesinstructionsonhowtonavigateamongthedesktop,theStartscreen,andapplications
thatwereopenedfromtheStartscreenontheWindows8andWindows8.1operatingsystems.Fordetailed
instructions,see“NavigatingonWindows8”onpage15

or“NavigatingonWindows8.1”onpage17.

NavigatingonWindows8

Tonavigateamongthedesktop,theStartscreen,andapplicationsthatwereopenedfromtheStartscreen
ontheWindows8operatingsystem,dooneofthefollowing:

©CopyrightLenovo2013,2015

15

•FromtheStartscreen,dooneofthefollowingtonavigatetothemostrecentlyaccessedworkspace
(application,PCsettings,ordesktop):

–Usingapointingdevice:Movethepointertotheextremebottom-leftcornerofthescreenuntilasmall

representationoftheworkspaceisdisplayed;thenclicktherepresentation.

–Usingatouchscreen:Swipeinandoutontheleftedgeofthescreen.Representationsofallavailable

workspacesaredisplayedalongtheleftedgeofthescreen.Taptherepresentationoftheworkspaceat
thebottom.

Note:Therepresentationofaworkspaceisdisplayedonlyifyouhaveatleastoneactiveworkspacein
thebackgroundofthesystem.

•FromthedesktoporanyotherworkspacethatisopenedfromtheStartscreen,dooneofthefollowingto
navigatetotheStartscreen:

–Usingapointingdevice:Movethepointertotheextremebottom-leftcornerofthescreenuntilasmall

representationoftheStartscreenisdisplayed;thenclicktherepresentation.

–Usingatouchscreen:Dooneofthefollowing:

–Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspacesare

displayedalongtheleftedgeofthescreen.T aptherepresentationoftheStartscreenatthebottom.

–Swipeinfromtherightedgeofthescreentodisplaythecharms;thentapStart.

•Fromanyworkspace(Startscreen,desktop,PCsettings,orapplicationopenedfromtheStartscreen),
useanyofthefollowingprocedurestogotoanotherworkspacethatyouhavepreviouslyopened:

–Tonavigatetoapreviouslyaccessedworkspace(application,PCsettings,ordesktop),dooneofthe

following:

–Usingapointingdevice:

1.Dooneofthefollowing:

•Movethepointertotheextremetop-leftcornerofthescreenandthenmovethepointer
downwardalongtheleftedgeofthescreen.

•Movethepointertotheextremebottom-leftcornerofthescreenandthenmovethepointer
upwardalongtheleftedgeofthescreen.

Representationsofallavailableworkspacesaredisplayedalongtheleftedgeofthescreen.

Note:OnlyactiveworkspacesthatyouhaveaccessedduringthecurrentWindowssession
aredisplayedalongtheleftedge.Ifyoucloseanactiveworkspace,itsrepresentationdoes
notdisplayalongtheleftedgeofthescreen.

2.Clicktherepresentation.

–Usingatouchscreen:

•Method1

1.Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspaces
aredisplayedalongtheleftedgeofthescreen.

2.T apthedesiredworkspace.

•Method2

1.Swipeinfromtheleftedgeofthescreentonavigatetothenextavailableworkspace.

2.Repeatstep1untilyounavigatetothedesiredworkspace.

–Tonavigatetothemostrecentlyaccessedworkspace(application,PCsettings,ordesktop),doone

ofthefollowing:

–Usingapointingdevice:Movethepointertotheextremetop-leftcornerofthescreenuntilasmall

representationoftheworkspaceisdisplayed;thenclicktherepresentation.

16ThinkCentreE73UserGuide

–Usingatouchscreen:Swipeinfromtheleftedgeofthescreen.

ForinformationaboutusingotherfeaturesoftheWindows8operatingsystem,refertotheWindowshelp
system.Formoreinformation,see“Windowshelpsystem”onpage111.

NavigatingonWindows8.1

Tonavigateamongthedesktop,theStartscreen,andapplicationsthatwereopenedfromtheStartscreen
ontheWindows8.1operatingsystem,dooneofthefollowing:

•FromtheStartscreen,dooneofthefollowingtonavigatetothemostrecentlyaccessedworkspace
(application,setting,ordesktop):

–Usingapointingdevice:Movethepointertotheextremebottom-leftcornerofthescreenuntilthe

Windowsscreen-controlicon

–Usingatouchscreen:Swipeinandoutontheleftedgeofthescreen.Representationsofallavailable

workspacesaredisplayedalongtheleftedgeofthescreen.TaptheWindowsscreen-controlicon

atthebottom.

Note:TheWindowsscreen-controliconisdisplayedonlyifyouhaveatleastoneactiveworkspace
inthebackgroundofthesystem.

•FromthedesktoporanyotherworkspacethatisopenedfromtheStartscreen,dooneofthefollowingto
navigatetotheStartscreen:

–Usingapointingdevice:

isdisplayed;thenclicktheicon.

–Fromthedesktop,clicktheWindowsscreen-controlicon
–Fromanyotherworkspace,movethepointertotheextremebottom-leftcornerofthescreenuntil

theWindowsscreen-controlicon

–Usingatouchscreen:Dooneofthefollowing:

–Fromthedesktop,taptheWindowsscreen-controliconinthebottom-leftcornerofthescreen.
–Fromanyotherworkspace,dooneofthefollowing:

•Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspaces
aredisplayedalongtheleftedgeofthescreen.TaptheWindowsscreen-controlicon

thebottom.

•Swipeinfromtherightedgeofthescreentodisplaythecharms;thentapStart.

•Fromanyworkspace(Startscreen,desktop,PCsettings,orapplicationopenedfromtheStartscreen),
useanyofthefollowingprocedurestogotoanotherworkspacethatyouhavepreviouslyopened:

–Tonavigatetoapreviouslyaccessedworkspace(application,setting,ordesktop),dooneofthe

following:

–Usingapointingdevice:

1.Dooneofthefollowing:

•Movethepointertotheextremetop-leftcornerofthescreenandthenmovethepointer
downwardalongtheleftedgeofthescreen.

•Movethepointertotheextremebottom-leftcornerofthescreenandthenmovethepointer
upwardalongtheleftedgeofthescreen.

isdisplayed;thenclicktheicon.

inthebottom-leftcornerofthescreen.

at

Representationsofallavailableworkspacesaredisplayedalongtheleftedgeofthescreen.

Chapter2.Usingyourcomputer17

Note:OnlyactiveworkspacesthatyouhaveaccessedduringthecurrentWindowssession
aredisplayedalongtheleftedge.Ifyoucloseanactiveworkspace,itsrepresentationdoes
notdisplayalongtheleftedgeofthescreen.

2.Clicktherepresentation.

–Usingatouchscreen:

•Method1

1.Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspaces
aredisplayedalongtheleftedgeofthescreen.

2.T apthedesiredworkspace.

•Method2

1.Swipeinfromtheleftedgeofthescreentonavigatetothenextavailableworkspace.

2.Repeatstep1untilyounavigatetothedesiredworkspace.

–Tonavigatetothemostrecentlyaccessedworkspace(application,PCsettings,ordesktop),doone

ofthefollowing:

–Usingapointingdevice:Movethepointertotheextremetop-leftcornerofthescreenuntilthe

Windowsscreen-controlicon

–Usingatouchscreen:Swipeinfromtheleftedgeofthescreen.

ForinformationaboutusingotherfeaturesoftheWindows8.1operatingsystem,opentheHelp+Tips
applicationfromtheStartscreenorAppsscreen,orrefertotheWindowshelpsystem.Formoreinformation,
see“Windowshelpsystem”onpage111.

isdisplayed;thenclicktheicon.

AccessingControlPanelontheWindows8orWindows8.1operating system

OntheWindowsoperatingsystem,youcanviewandchangecomputersettingsthroughControlPanel.To
accessControlPanelontheWindows8orWindows8.1operatingsystem,dooneofthefollowing:

•Fromthedesktop

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.

2.ClickSettings.

3.ClickControlPanel.

•FromtheStartscreen

–ForWindows8:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.

2.ClickSearch.

3.OntheAppsscreen,scrolltotherightside,andclickControlPanelintheWindowsSystem
section.

–ForWindows8.1:

1.Clickthearrowiconinthebottom-leftcornerofthescreentogototheAppsscreen.

2.Scrolltotherightside,andclickControlPanelintheWindowsSystemsection.

UsingWindowsshortcutkeys

Boththestandardkeyboardandthefingerprintreaderkeyboardprovidethreekeysyoucanusewithyour
MicrosoftWindowsoperatingsystem.

18ThinkCentreE73UserGuide

•ThetwoWindowslogokeysarelocatedbesidetheAltkeyoneithersideofthespacebar.Theyfeature
theWindowslogo.OntheWindows7orWindows10operatingsystem,presstheWindowskeyto
opentheStartmenu.OntheWindows8orWindows8.1operatingsystem,presstheWindowskey

toswitchbetweenthecurrentworkspaceandtheStartscreen.ThestyleoftheWindowslogovaries
dependingonthekeyboardtype.

•Thecontext-menukeyislocatednexttotheCtrlkeyontherightsideoftheSpacebar.Pressingthe
context-menukeyopensthecontextmenufortheactiveprogram,icon,orobject.

Note:YoucanusethemouseortheUpandDownarrowkeystohighlightmenuselections.OntheWindows
7operatingsystem,youcanclosetheStartmenuorthecontextmenubyclickingthemouseorpressingEsc.

Usingthewheelmouse

Thewheelmousehasthefollowingcontrols:

1PrimarymousebuttonUsethisbuttontoselectorstartaprogramormenuitem.

2Wheel

3Secondarymousebutton

Youcanswitchthefunctionoftheprimaryandsecondarymousebuttonsandchangeotherdefaultbehavior
throughthemousepropertiesfunctionintheWindowsControlPanel.

Usethewheeltocontrolthescrollingactionofthemouse.Thedirectioninwhichyou
rotatethewheelcontrolsthedirectionofthescrollingaction.

Usethisbuttontodisplayamenufortheactiveprogram,icon,orobject.

Settingthecomputervolume

Tosetthecomputervolume,dothefollowing:

1.ClickthevolumeiconintheWindowsnotificationareaonthetaskbar.

Note:IfthevolumeiconisnotdisplayedintheWindowsnotificationarea,addtheicontothe
notificationarea.See“AddinganicontotheWindowsnotificationarea”onpage19.

2.Followtheinstructionsonthescreentoadjustthevolume.Clickthespeakericontomutetheaudio.

AddinganicontotheWindowsnotificationarea

ToaddanicontotheWindowsnotificationarea,dothefollowing:

1.Clickthearrownexttothenotificationareatoviewhiddenicons.Then,clickthedesirediconand
dragittothenotificationarea.

2.Iftheiconisnotdisplayed,turnontheicon.
a.DependingonyourWindowsversion,dooneofthefollowing:

Chapter2.Usingyourcomputer19

•ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthenclickControlPanel.
ViewControlPanelusingLargeiconsorSmallicons,andthenclickNotificationAreaIcons➙
Turnsystemiconsonoroff.

•ForWindows8orWindows8.1:OpenControlPanel.ViewControlPanelusingLargeiconsor
Smallicons,andthenclickNotificationAreaIcons➙Turnsystemiconsonoroff.

Note:FordetailedinformationonhowtoopenControlPanelonWindows8andWindows8.1,
see“AccessingControlPanelontheWindows8orWindows8.1operatingsystem”onpage18

•ForWindows10:ClicktheStartbuttontoopentheStartmenu.Then,clickSettings➙System
➙Notifications&actions➙Turnsystemiconsonoroff.

b.Turnonthedesiredicon.

3.IftheiconisstillnotdisplayedintheWindowsnotificationarea,repeatstep1.

UsingCDsandDVDs

YourcomputermighthaveaDVDROMdriveorrecordableDVDdriveinstalled.DVDdrivesuse
industry-standard,12cm(4.75-inch)CDmediaorDVDmedia.IfyourcomputercomeswithaDVDdrive,
thedrivecanreadDVD-ROMdiscs,DVD-Rdiscs,DVD-RAMdiscs,DVD-RWdiscs,andalltypesofCDs,
suchasCD-ROMdiscs,CD-RWdiscs,CD-Rdiscs,andaudioCDs.IfyouhavearecordableDVDdrive,
itcanalsorecordonDVD-Rdiscs,DVD-RWdiscs,typeIIDVD-RAMdiscs,CD-RWstandardandhigh
speeddiscs,andCD-Rdiscs.

FollowtheseguidelineswhenusingtheDVDdrive:

.

•Donotplacethecomputerinalocationwherethedriveisexposedtothefollowing:

–Hightemperature
–Highhumidity
–Excessivedust
–Excessivevibrationorsuddenshock
–Aninclinedsurface
–Directsunlight

•DonotinsertanyobjectotherthanaCDorDVDintothedrive.

•Beforemovingthecomputer,removetheCDorDVDfromthedrive.

HandlingandstoringCDandDVDmedia

CDandDVDmediaaredurableandreliable,buttheydorequiresomecareandspecialhandling.When
handlingandstoringaCDorDVD,followtheseguidelines:

•Holdthediscbyitsedges.Donottouchthesurfaceofthesidethatisnotlabeled.

•Toremovedustorfingerprints,wipethediscwithaclean,softclothfromthecentertotheoutside.Wiping
thediscinacirculardirectionmightcauselossofdata.

•Donotwriteorstickpaperonthedisc.

•Donotscratchormarkthedisc.

•Donotplaceorstorethediscindirectsunlight.

•Donotusebenzene,thinners,orothercleanerstocleanthedisc.

•Donotdroporbendthedisc.

•Donotinsertdamageddiscsintothedrive.Warped,scratched,ordirtydiscscandamagethedrive.

20ThinkCentreE73UserGuide

PlayingaCDorDVD

IfyourcomputercomeswithaDVDdrive,youcanlistentoaudioCDsorwatchDVDmovies.Toplaya
CDorDVD,dothefollowing:

1.PresstheEject/LoadbuttonontheDVDdrivetoopenthetray.

2.Withthetrayfullyextended,inserttheCDorDVDintothetray.SomeDVDdriveshaveasnaphubin
thecenterofthetray.Ifyourdrivehasasnaphub,supportthetraywithonehandandthenpushthe
centeroftheCDorDVDuntilitsnapsintoplace.

3.PresstheEject/Loadbuttonagainorgentlypushthetrayforwardtoclosethetray.TheCDorDVD
playerprogramstartsautomatically.Foradditionalinformation,refertotheCDorDVDplayerprogram
helpsystem.

ToremoveaCDorDVDfromtheDVDdrive,dothefollowing:

1.Withthecomputeron,presstheEject/Loadbutton.Whenthetrayslidesoutautomatically,carefully
removethedisc.

2.ClosethetraybypressingtheEject/Loadbuttonorbygentlypushingthetrayforward.

Note:IfthetraydoesnotslideoutofthedrivewhenyoupresstheEject/Loadbutton,insertastraightened
paperclipintotheemergency-ejectholeonthefrontoftheDVDdrive.Besurethatthedriveispowered
offwhenusingtheemergencyeject.UsetheEject/Loadbuttoninsteadoftheemergencyejectexcept
inanemergency.

RecordingaCDorDVD

Ifyouropticaldrivesupportsrecording,youcanrecordaCDorDVD.

TorecordaCDorDVD,dothefollowing:

1.Insertarecordablediscintotheopticaldrivethatsupportsrecording.

2.OpenthePowerDVDCreate,PowerProducer,orPower2Goprogram.See“Accessingaprogramon
yourcomputer”onpage5.

3.Followtheinstructionsonthescreen.

Chapter2.Usingyourcomputer21

22ThinkCentreE73UserGuide

Chapter3.Y ouandyourcomputer

Thischapterprovidesinformationaboutaccessibility,comfort,andrelocatingyourcomputertoother
countriesorregions.

Accessibilityandcomfort

Goodergonomicpracticeisimportanttogetthemostfromyourpersonalcomputerandtoavoiddiscomfort.
Arrangeyourworkplaceandtheequipmentyouusetosuityourindividualneedsandthekindofwork
thatyouperform.Inaddition,usehealthyworkhabitstomaximizeyourperformanceandcomfortwhile
usingyourcomputer.

Thefollowingtopicsprovideinformationaboutarrangingyourworkarea,settingupyourcomputer
equipment,andestablishinghealthyworkhabits.

Arrangingyourworkspace

Togetthemostfromyourcomputer,arrangeboththeequipmentyouuseandyourworkareatosuityour
needsandthekindofworkyoudo.Yourcomfortisofforemostimportance,butlightsources,aircirculation,
andthelocationofelectricaloutletscanalsoaffectthewayyouarrangeyourworkspace.

Comfort

Althoughnosingleworkingpositionisidealforeveryone,hereareafewguidelinestohelpyoufinda
positionthatsuitsyoubest.

Sittinginthesamepositionforalongtimecancausefatigue.Thebackrestandseatofyourchairshould
adjustindependentlyandprovidegoodsupport.Theseatshouldhaveacurvedfronttorelievepressureon
thethighs.Adjusttheseatsothatyourthighsareparalleltothefloorandyourfeetareeitherflatonthe
floororonafootrest.

Whenusingthekeyboard,keepyourforearmsparalleltothefloorandyourwristsinacomfortableposition.
Usealighttouchonthekeyboardandyourhandsandfingersrelaxed.Changetheangleofthekeyboard
formaximumcomfortbyadjustingthepositionofthekeyboardfeet.

Adjustthemonitorsothetopofthescreenisat,orslightlybelow,eyelevel.Placethemonitorata
comfortableviewingdistance,usually51to61cm(20to24inches),andpositionitsoyoucanviewit
withouthavingtotwistyourbody.Also,positionotherequipmentyouuseregularly,suchasthetelephoneor
amouse,withineasyreach.

©CopyrightLenovo2013,2015

23

Glareandlighting

Positionthemonitortominimizeglareandreflectionsfromoverheadlights,windows,andotherlightsources.
Reflectedlightfromshinysurfacescancauseannoyingreflectionsonyourmonitorscreen.Placethe
monitoratrightanglestowindowsandotherlightsources,whenpossible.Reduceoverheadlighting,if
necessary,byturningofflightsorusinglowerwattagebulbs.Ifyouinstallthemonitornearawindow,use
curtainsorblindstoblockthesunlight.Y oucanadjustthebrightnessandcontrastcontrolsonthemonitor
astheroomlightingchangesthroughouttheday.

Whereitisimpossibletoavoidreflectionsortoadjustthelighting,anantiglarefilterplacedoverthescreen
mightbehelpful.However,thesefiltersmightaffecttheclarityoftheimageonthescreen;trythemonlyafter
youhaveexhaustedothermethodsofreducingglare.

Dustbuildupcompoundsproblemsassociatedwithglare.Remembertocleanyourmonitorscreen
periodicallyusingasoftclothasdirectedinyourmonitordocumentation.

Aircirculation

Yourcomputerandmonitorproduceheat.Thecomputerhasafanthatpullsinfreshairandforcesouthot
air.Themonitorletshotairescapethroughvents.Blockingtheairventscancauseoverheating,whichmight
resultinamalfunctionordamage.Placethecomputerandmonitorsothatnothingblockstheairvents;
usually,51mm(2inches)ofairspaceissufficient.Also,makesurethattheventedairisnotblowing
onpeople.

Electricaloutletsandcablelengths

Thelocationofelectricaloutlets,thelengthofpowercordsandcablesthatconnecttothemonitor,printer,
andotherdevicesmightdeterminethefinalplacementofyourcomputer.

Whenarrangingyourworkspace:

•Avoidtheuseofextensioncords.Whenpossible,plugthecomputerpowercorddirectlyintoanelectrical
outlet.

•Keeppowercordsandcablesneatlyroutedawayfromwalkwaysandotherareaswheretheymight
getkickedaccidentally.

Formoreinformationaboutpowercords,see“Powercordsandpoweradapters”onpagevi

.

Accessibilityinformation

Lenovoiscommittedtoprovidinguserswhohavehearing,vision,andmobilitylimitationswithgreater
accesstoinformationandtechnology.Thissectionprovidesinformationaboutthewaystheseuserscanget
themostoutoftheircomputerexperience.Youalsocangetthemostup-to-dateaccessibilityinformation
fromthefollowingWebsite:
http://www.lenovo.com/accessibility

Keyboardshortcuts

Thefollowingtablecontainskeyboardshortcutsthatcanhelpmakeyourcomputereasiertouse.

Note:Dependingonyourkeyboard,someofthefollowingkeyboardshortcutsmightnotbeavailable.

KeyboardshortcutFunction

Windowslogokey+U

RightShiftforeightseconds

24ThinkCentreE73UserGuide

OpenEaseofAccessCenter

TurnonorturnoffFilterKeys

KeyboardshortcutFunction

ShiftfivetimesTurnonorturnoffStickyKeys

NumLockforfivesecondsTurnonorturnoffToggleKeys

LeftAlt+LeftShift+NumLock

LeftAlt+LeftShift+PrtScn(orPrtSc)T urnonorturnoffHighContrast

TurnonorturnoffMouseKeys

Formoreinformation,gotohttp://windows.microsoft.com/,andthenperformasearchusinganyofthe
followingkeywords:keyboardshortcuts,keycombinations,shortcutkeys.

EaseofAccessCenter

EaseofAccessCenterontheWindowsoperatingsystemenablesuserstoconfiguretheircomputersto
suittheirphysicalandcognitiveneeds.

TouseEaseofAccessCenter,dothefollowing:

1.DependingonyourWindowsversion,dooneofthefollowing:

•ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthenclickControlPanel.View
ControlPanelusingLargeiconsorSmallicons,andthenclickEaseofAccessCenter.

•ForWindows8orWindows8.1:Movethepointertothetop-rightorbottom-rightcornerofthescreen
todisplaythecharms.Then,clickSettings➙ChangePCsettings➙EaseofAccess.

•ForWindows10:ClicktheStartbuttontoopentheStartmenu.Then,clickSettings➙Easeof
Access.

2.Choosetheappropriatetoolbyfollowingtheinstructionsonthescreen.

EaseofAccessCentermainlyincludesthefollowingtools:

•Magnifier
Magnifierisausefulutilitythatenlargestheentirescreenorpartofthescreensothatyoucansee

theitemsbetter.

•Narrator
Narratorisascreenreaderthatreadsaloudwhatisdisplayedonthescreenanddescribeseventssuchas

errormessages.

•On-ScreenKeyboard
Ifyouprefertotypeorenterdataintoyourcomputerusingamouse,joystick,orotherpointingdevice

insteadofaphysicalkeyboard,youcanuseOn-ScreenKeyboard.On-ScreenKeyboarddisplaysavisual
keyboardwithallthestandardkeys.

•HighContrast
HighContrastisafeaturethatheightensthecolorcontrastofsometextandimagesonyourscreen.Asa

result,thoseitemsaremoredistinctandeasiertoidentify.

•Personalizedkeyboard
Adjustkeyboardsettingstomakeyourkeyboardeasiertouse.Forexample,youcanuseyourkeyboard

tocontrolthepointerandtypecertainkeycombinationseasier.

•Personalizedmouse
Adjustmousesettingstomakeyourmouseeasiertouse.Forexample,youcanchangethepointer

appearanceandmakeiteasiertomanagewindowswiththemouse.

SpeechRecognition

SpeechRecognitionenablesyoutocontrolyourcomputerbyvoice.

Chapter3.Youandyourcomputer25

Usingonlyyourvoice,youcanstartprograms,openmenus,clickobjectsonthescreen,dictatetextinto
documents,andwriteandsende-mails.Everythingyoudowiththekeyboardandmousecanbedonewith
onlyyourvoice.

TouseSpeechRecognition,dothefollowing:

1.DependingonyourWindowsversion,dooneofthefollowing:

•ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthenclickControlPanel.

•ForWindows8orWindows8.1:OpenControlPanel.See“AccessingControlPanelontheWindows
8orWindows8.1operatingsystem”onpage18.

•ForWindows10:Right-clicktheStartbuttontoopentheStartcontextmenu,andthenclickControl
Panel.

2.ViewControlPanelusingLargeiconsorSmallicons,andthenclickSpeechRecognition.

3.Followtheinstructionsonthescreen.

Screen-readertechnologies

Screen-readertechnologiesareprimarilyfocusedonsoftwareprograminterfaces,helpinformationsystems,
andvariousonlinedocuments.Foradditionalinformationaboutscreenreaders,seethefollowing:

•UsingPDFswithscreenreaders:
http://www.adobe.com/accessibility.html?promoid=DJGVE

•UsingtheJAWSscreenreader:
http://www.freedomscientific.com/jaws-hq.asp

•UsingtheNVDAscreenreader:
http://www.nvaccess.org/

Screenresolution

Youcanmakethetextandimagesonyourscreeneasiertoreadbyadjustingthescreenresolutionofyour
computer.

Toadjustthescreenresolution,dothefollowing:

1.Right-clickablankareaonthedesktop.

2.DependingonyourWindowsversion,dooneofthefollowing:

•ForWindows7,Windows8,orWindows8.1:ClickScreenresolution.

•ForWindows10:ClickDisplaysettings.OntheDisplaytab,clickAdvanceddisplaysettings.

3.Followtheinstructionsonthescreen.

Note:Settingtheresolutiontoolowmightpreventsomeitemsfromfittingonthescreen.

Customizableitemsize

Youcanmaketheitemsonyourscreeneasiertoreadbychangingtheitemsize.

•Tochangetheitemsizetemporarily,usetheMagnifiertoolinEaseofAccessCenter.See“Easeof
AccessCenter”onpage25

.

•Tochangetheitemsizepermanently,dothefollowing:

–Changethesizeofalltheitemsonyourscreen.

1.Right-clickablankareaonthedesktop.

2.DependingonyourWindowsversion,dooneofthefollowing:

26ThinkCentreE73UserGuide

–ForWindows7,Windows8,orWindows8.1:ClickScreenresolution➙Maketextandother

itemslargerorsmaller.

–ForWindows10:ClickDisplaysettings.

3.Changetheitemsizebyfollowingtheinstructionsonthescreen.

4.ClickApply.Thischangewilltakeeffectthenexttimeyoulogintotheoperatingsystem.

–ChangethesizeoftheitemsonaWebpage.

PressandholdCtrl,andthenpresstheplus-signkey(+)toenlargeortheminus-signkey(-)to
reducethetextsize.

–Changethesizeoftheitemsonthedesktoporawindow.

Note:Thisfunctionmightnotworkonsomewindows.
Ifyourmousehasawheel,pressandholdCtrl,andthenscrollthewheeltochangetheitemsize.

Industry-standardconnectors

Yourcomputerprovidesindustry-standardconnectorsthatenableyoutoconnectassistivedevices.

Formoreinformationaboutthelocationandfunctionoftheconnectors,see“Locations”onpage8.

TTY/TDDconversionmodem

Yourcomputersupportstheuseofatexttelephone(TTY)orthetelecommunicationsdeviceforthedeaf
(TDD)conversionmodem.ThemodemmustbeconnectedbetweenyourcomputerandaTTY/TDD
telephone.Then,youcantypeamessageonyourcomputerandsendittothetelephone.

Documentationinaccessibleformats

Lenovoprovideselectronicdocumentationinaccessibleformats,suchasproperlytaggedPDFfilesor
HyperTextMarkupLanguage(HTML)files.Lenovoelectronicdocumentationisdevelopedtoensure
thatvisuallyimpaireduserscanreadthedocumentationthroughascreenreader.Eachimageinthe
documentationalsoincludesadequatealternativetextsothatvisuallyimpaireduserscanunderstandthe
imagewhentheyuseascreenreader.

Registeringyourcomputer

WhenyouregisteryourcomputerwithLenovo,youenterrequiredinformationintoaLenovodatabase.The
informationenablesLenovotocontactyouwhenthereisarecallorothersevereproblemandprovide
quickerservicewhenyoucallLenovoforhelp.Inaddition,somelocationsofferextendedprivilegesand
servicestoregisteredusers.

ToregisteryourcomputerwithLenovo,ensurethatyourcomputerisconnectedtotheInternet.Then,goto
http://www.lenovo.com/registerandfollowtheinstructionsonthescreen.

Movingyourcomputertoanothercountryorregion

Whenyoumoveyourcomputertoanothercountryorregion,youmusttakelocalelectricalstandards
intoconsideration.

Ifyourelocateyourcomputertoacountryorregionthatusesanelectricaloutletstyledifferentfromthe
typeyouarecurrentlyusing,youwillhavetopurchaseeitherelectricalplugadaptersornewpowercords.
YoucanorderpowercordsdirectlyfromLenovo.

Forpowercordinformationandpartnumbers,goto:
http://www.lenovo.com/powercordnotice

Chapter3.Youandyourcomputer27

28ThinkCentreE73UserGuide

Chapter4.Security

Thischapterprovidesinformationabouthowtoprotectyourcomputerfromtheftandunauthorizeduse.

Securityfeatures

Thefollowingsecurityfeaturesareavailableonyourcomputer:

•ComputraceAgentsoftwareembeddedinfirmware
TheComputraceAgentsoftwareisanITassetmanagementandcomputertheftrecoverysolution.

Thesoftwaredetectsifchangeshavebeenmadeonthecomputer,suchashardware,software,or
thecomputercall-inlocation.

Note:YoumighthavetopurchaseasubscriptiontoactivatetheComputraceAgentsoftware.

•AbilitytoenableanddisabledevicesandUSBconnectors
Formoreinformation,see“Enablingordisablingadevice”onpage79

•Startupsequencecontrol
Formoreinformation,see“Selectingorchangingthestartupdevicesequence”onpage80

•Startupwithoutkeyboardormouse
Yourcomputerisabletologintotheoperatingsystemwithoutkeyboardormouseconnected.

.

.

©CopyrightLenovo2013,2015

29

Lockingthecomputercover

3

4

5

6

Lockingthecomputercoverhelpspreventunauthorizedpeoplefromgainingaccesstotheinsideofyour
computer.Yourcomputercomeswithapadlockloopsothatthecomputercovercannotberemoved
whenapadlockisinstalled.

Figure7.Installingapadlock

30ThinkCentreE73UserGuide

AttachingaKensington-stylecablelock

YoucanuseaKensington-stylecablelocktosecureyourcomputertoadesk,table,orothernon-permanent
fixture.Thecablelockattachestothesecurity-lockslotattherearofyourcomputerandisoperatedwitha
keyorcombinationdependingonthetypeselected.Thecablelockalsolocksthebuttonsusedtoopenthe
computercover.Thisisthesametypeoflockusedwithmanynotebookcomputers.Youcanordersucha
cablelockdirectlyfromLenovobysearchingforKensingtonat:
http://www.lenovo.com/support

Figure8.Kensington-stylecablelock

Preventingunauthorizedaccesstoyourcomputer

YoucanuseBIOSpasswordsandWindowsaccountstopreventunauthorizedaccesstoyourcomputerand
data.

•TouseBIOSpasswords,see“UsingBIOSpasswords”onpage77.

•TouseWindowsaccounts,dothefollowing:

1.DependingonyourWindowsversion,dooneofthefollowing:

–ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthenclickControlPanel➙

UserAccounts.

–ForWindows8orWindows8.1:Movethepointertothetop-rightorbottom-rightcornerofthe

screentodisplaythecharms.Then,clickSettings➙ChangePCsettings➙Accounts.

–ForWindows10:ClicktheStartbuttontoopentheStartmenu,andthenclickSettings➙

Accounts.

2.Followtheinstructionsonthescreen.

Chapter4.Security31

Usingfingerprintauthentication

Ifyourkeyboardhasafingerprintreader,youcanusefingerprintauthenticationtoreplacepasswordsfor
simpleandsecureuseraccess.Tousefingerprintauthentication,firstenrollyourfingerprintsandassociate
themwithyourpasswords(suchasthepower-onpassword,harddiskpassword,andWindowspassword).
Usethefingerprintreaderandthefingerprintprogramtocompletethisprocedure.

Tousefingerprintauthentication,dooneofthefollowing:

•ForWindows7,Windows8,orWindows8.1:UsetheFingerprintManagerProorThinkVantage
FingerprintSoftwareprogramprovidedbyLenovo.Toopentheprogram,see“Accessingaprogramon
yourcomputer”onpage5.Formoreinformationaboutusingtheprogram,refertothehelpsystem
oftheprogram.

•ForWindows10:UsethefingerprinttoolprovidedbyWindows.ClicktheStartbuttontoopentheStart
menu,andthenclickSettings➙Accounts➙Sign-inoptions.Followtheinstructionsonthescreen.

Tousethefingerprintreader,refertothedocumentationshippedwiththefingerprintkeyboardorlocatedon
theLenovoSupportWebsiteathttp://www.lenovo.com/support/keyboards.

Usingandunderstandingfirewalls

Afirewallcanbehardware,software,oracombinationofbothdependingonthelevelofsecurityrequired.
Firewallsworkonasetofrulestodeterminewhichinboundandoutboundconnectionsareauthorized.If
yourcomputerispreinstalledwithafirewallprogram,ithelpsprotectagainstcomputerInternetsecurity
threats,unauthorizedaccess,intrusions,andInternetattacks.Italsoprotectsyourprivacy.Formore
informationabouthowtousethefirewallprogram,refertothehelpsystemofyourfirewallprogram.

TheWindowsoperatingsystempreinstalledonyourcomputerprovidestheWindowsFirewall.Fordetailson
usingtheWindowsFirewall,referto“Windowshelpsystem”onpage111

.

Protectingdataagainstviruses

Yourcomputerispreinstalledwithanantivirusprogramtohelpyouguardagainst,detect,andeliminate
viruses.

Lenovoprovidesafullversionofantivirussoftwareonyourcomputerwithafree30-daysubscription.After
30days,youmustrenewthelicensetocontinuereceivingtheantivirussoftwareupdates.

Note:Virusdefinitionfilesmustbekeptup-to-datetoguardagainstnewviruses.

Formoreinformationabouthowtouseyourantivirussoftware,refertothehelpsystemofyourantivirus
software.

32ThinkCentreE73UserGuide

Chapter5.Installingorreplacinghardware

Thischapterprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.

Handlingstatic-sensitivedevices

Donotopenthestatic-protectivepackagecontainingthenewpartuntilthedefectiveparthasbeenremoved
fromthecomputerandyouarereadytoinstallthenewpart.Staticelectricity,althoughharmlesstoyou,can
seriouslydamagecomputercomponentsandparts.

Whenyouhandlepartsandothercomputercomponents,taketheseprecautionstoavoidstatic-electricity
damage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayshandlepartsandothercomputercomponentscarefully.HandlePCIExpresscards,memory
modules,systemboards,andmicroprocessorsbytheedges.Nevertouchanyexposedcircuitry.

•Preventothersfromtouchingthepartsandothercomputercomponents.

•Beforeyoureplaceanewpart,touchthestatic-protectivepackagecontainingtheparttoametal
expansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwoseconds.This
reducesstaticelectricityfromthepackageandyourbody.

•Whenpossible,removethenewpartfromthestatic-protectivepackaging,andinstallitdirectlyinthe
computerwithoutsettingthepartdown.Whenthisisnotpossible,placethestatic-protectivepackage
thatthepartcameinonasmooth,levelsurfaceandplacethepartonit.

•Donotplacethepartonthecomputercoverorothermetalsurface.

Installingorreplacinghardware

Thissectionprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.Youcanexpand
thecapabilitiesofyourcomputerandmaintainyourcomputerbyinstallingorreplacinghardware.

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe
“Importantsafetyinformation”onpagev.

Notes:

1.UseonlycomputerpartsprovidedbyLenovo.

2.Wheninstallingorreplacinganoption,usetheappropriateinstructionsinthissectionalongwiththe
instructionsthatcomewiththeoption.

Installingexternaloptions

Youcanconnectexternaloptionstoyourcomputer,suchasexternalspeakers,aprinter,orascanner.For
someexternaloptions,youmustinstalladditionalsoftwareinadditiontomakingthephysicalconnection.
Wheninstallinganexternaloption,see“Locatingconnectors,controls,andindicatorsonthefrontofyour
computer”onpage9
requiredconnector.Then,usetheinstructionsthatcomewiththeoptiontohelpyoumaketheconnection
andinstallanysoftwareordevicedriversthatarerequiredfortheoption.

and“Locatingconnectorsontherearofyourcomputer”onpage10toidentifythe

Removingthecomputercover

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

©CopyrightLenovo2013,2015

33

Thissectionprovidesinstructionsonhowtoremovethecomputercover.

3

4

5

6

CAUTION:

Beforeyouopenthecomputercover,turnoffthecomputerandwaitseveralminutesuntilthe
computeriscool.

Toremovethecomputercover,dothefollowing:

1.Removeanymediafromthedrivesandturnoffallattacheddevicesandthecomputer.

2.Disconnectallpowercordsfromelectricaloutlets.

3.Disconnectthepowercords,Input/Outputcables,andanyothercablesthatareconnectedtothe
computer.See“Locatingconnectors,controls,andindicatorsonthefrontofyourcomputer”onpage9
and“Locatingconnectorsontherearofyourcomputer”onpage10.

4.Removeanylockingdevicethatsecuresthecomputercover,suchasapadlockoraKensington-style
cablelock.See“Lockingthecomputercover”onpage30

and“AttachingaKensington-stylecable

lock”onpage31.

5.Removethetwoscrewsthatsecurethecomputercoverandslidethecomputercovertotherearto
removeit.

Figure9.Removingthecomputercover

Removingandreinstallingthefrontbezel

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoremoveandreinstallthefrontbezel.

34ThinkCentreE73UserGuide

Toremoveandreinstallthefrontbezel,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Removethefrontbezelbyreleasingthethreeplastictabsontheleftsideandpivotingthefrontbezel
outward.

Figure10.Removingthefrontbezel

Chapter5.Installingorreplacinghardware35

4.T oreinstallthefrontbezel,alignthethreeplastictabsontherightsideofthefrontbezelwiththe
correspondingholesinthechassis,thenpivotthefrontbezelinwardsuntilitsnapsintopositionon
theleftside.

Figure11.Reinstallingthefrontbezel

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

InstallingorreplacingaPCIExpresscard

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

ThissectionprovidesinstructionsonhowtoinstallorreplaceaPCIExpresscard.Yourcomputerhastwo
PCIExpressx1cardslotsandonePCIExpressx16graphicscardslot.

ToinstallorreplaceaPCIExpresscard,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

36ThinkCentreE73UserGuide

3.Attherearofthecomputer,removethescrewthatsecuresthePCIExpresscardlatch.

3

4

5

6

Figure12.RemovingthescrewthatsecuresthePCIExpresscardlatch

4.DependingonwhetheryouareinstallingorreplacingaPCIExpresscard,dooneofthefollowing:

•IfyouareinstallingaPCIExpresscard,removetheappropriatemetalslotcover.

Chapter5.Installingorreplacinghardware37

•IfyouarereplacinganoldPCIExpresscard,grasptheoldcardthatiscurrentlyinstalledandgently

3

4

5

6

pullitoutoftheslot.

Figure13.RemovingaPCIExpresscard

Notes:

a.Thecardfitstightlyintothecardslot.Ifnecessary,alternatemovingeachsideofthecardasmall

amountuntilitisremovedfromthecardslot.

b.Ifthecardisheldinplacebyaretaininglatch,pressthecardretaininglatch1asshownto

disengagethelatch.Graspthecardandgentlypullitoutoftheslot.

5.RemovethenewPCIExpresscardfromitsstatic-protectivepackage.

6.InstallthenewPCIExpresscardintotheappropriateslotonthesystemboard.See“Locatingpartson
thesystemboard”onpage12.

Note:IfyouareinstallingaPCIExpressx16graphicscard,makesurethatthememoryslotretaining
clipsareclosedbeforeyouinstallthegraphicscard.

38ThinkCentreE73UserGuide

7.PivotthecardlatchtotheclosedpositiontosecurethePCIExpresscard.

3

4

5

6

Figure14.InstallingaPCIExpresscard

8.ReinstallthescrewtosecurethePCIExpresscardlatchinplace.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Installingorreplacingamemorymodule

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.

YourcomputerhastwoslotsforinstallingorreplacingDDR3UDIMMsthatprovideuptoamaximumof8
GBsystemmemory.Wheninstallingorreplacingamemorymodule,use1GB,2GB,or4GBDDR3
UDIMMsinanycombinationuptoamaximumof8GB.

Toinstallorreplaceamemorymodule,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage12.

5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer
model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory
slots.See“InstallingorreplacingaPCIExpresscard”onpage36.

6.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:

Chapter5.Installingorreplacinghardware39

•Ifyouarereplacinganoldmemorymodule,opentheretainingclipsandgentlypullthememory
moduleoutofthememoryslot.

Figure15.Removingamemorymodule

•Ifyouareinstallingamemorymodule,opentheretainingclipsofthememoryslotintowhichyou
wanttoinstallthememorymodule.

Figure16.Openingtheretainingclips

40ThinkCentreE73UserGuide

7.Positionthenewmemorymoduleoverthememoryslot.Makesurethatthenotch1onthememory
modulealignscorrectlywiththeslotkey2onthesystemboard.Pushthememorymodulestraight
downintotheslotuntiltheretainingclipsclose.

Figure17.Installingamemorymodule

8.ReinstallthePCIExpressx16graphicscardifyouhaveremovedit.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingthebattery

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Yourcomputerhasaspecialtypeofmemorythatmaintainsthedate,time,andsettingsforbuilt-infeatures,
suchasparallel-portassignments(configuration).Abatterykeepsthisinformationactivewhenyouturn
offthecomputer.

Thebatterynormallyrequiresnochargingormaintenancethroughoutitslife;however,nobatterylasts
forever.Ifthebatteryfails,thedate,time,andconfigurationinformation(includingpasswords)arelost.An
errormessageisdisplayedwhenyouturnonthecomputer.

Refertothe“Lithiumbatterynotice”intheSafety,Warranty,andSetupGuideforinformationaboutreplacing
anddisposingofthebattery.

Toreplacethebattery,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Locatethebattery.See“Locatingpartsonthesystemboard”onpage12.

Chapter5.Installingorreplacinghardware41

4.Removetheoldbattery.

Figure18.Removingtheoldbattery

5.Installanewbattery.

Figure19.Installinganewbattery

6.Reinstallthecomputercoverandconnectthecables.See“Completingthepartsreplacement”on
page64.

Note:Whenthecomputeristurnedonforthefirsttimeafterreplacingthebattery,anerrormessage
mightbedisplayed.Thisisnormalafterreplacingthebattery.

7.T urnonthecomputerandallattacheddevices.

8.UsetheSetupUtilityprogramtosetthedate,time,andanypasswords.SeeChapter7“UsingtheSetup
Utilityprogram”onpage77.

Replacingtheprimaryharddiskdrive

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoreplacetheprimaryharddiskdrive.

Toreplacetheprimaryharddiskdrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Locatetheprimaryharddiskdrive.See“Locatinginternaldrives”onpage13.

Note:Thereisalsoasecondaryharddiskdrivebayforyoutopurchaseandinstallasecondaryhard
diskdrivebyyourself.Ifyouwanttoinstallasecondaryharddiskdrive,usethesamewayofinstalling
theprimaryharddiskdrive.

4.Disconnectthesignalcableandthepowercablefromtheharddiskdrive.

5.Removethefourscrewsthatsecuretheharddiskdrive.Then,slidetheharddiskdriveoutofthechassis.

42ThinkCentreE73UserGuide

3

4

5

6

Figure20.Removingtheprimaryharddiskdrive

3

4

5

6

6.Slidethenewharddiskdriveintotheharddiskdrivebayandalignthescrewholesinthenewhard
diskdrivewiththecorrespondingholesinthedrivebay.Then,installthefourscrewstosecurethe
newharddiskdriveinplace.

Figure21.Installingtheharddiskdrive

Chapter5.Installingorreplacinghardware43

7.Connectoneendofthesignalcabletotherearofthenewharddiskdriveandtheotherendtoan
availableSATAconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage12.
Then,locateanavailablefive-wirepowerconnectorandconnectittotherearofthenewharddiskdrive.

Figure22.ConnectingaSATAharddiskdrive

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingtheopticaldrive

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoinstallorreplacetheopticaldrive.

Note:Theopticaldriveisonlyavailableinsomemodels.

Toreplaceanopticaldrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage34.

4.Removethethreescrewsthatsecuretheopticaldrive.Then,slidetheopticaldriveoutofthefront
ofthecomputer.

44ThinkCentreE73UserGuide

Figure23.Removingtheopticaldrive

5.Slidethenewopticaldriveintothedrivebayfromthefrontandalignthescrewholesinthenewoptical
drivewiththecorrespondingholesinthedrivebay.Then,installthethreescrewstosecurethenew
opticaldriveinplace.

Figure24.Installingtheopticaldrive

Chapter5.Installingorreplacinghardware45

6.Connectoneendofthesignalcabletotherearofthenewopticaldriveandtheotherendtoanavailable
SATAconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage12.Then,
locateanavailablefive-wirepowerconnectorandconnectittotherearofthenewopticaldrive.

Figure25.Connectingtheopticaldrive

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64

Replacingthepowersupplyassembly

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

.

Thissectionprovidesinstructionsonhowtoreplacethepowersupplyassembly.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafetyandproperUnderwritersLaboratories(UL)certification.

CAUTION:

Hazardousmovingparts.Keepfingersandotherbodypartsaway.

CAUTION:
Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

46ThinkCentreE73UserGuide

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel

3

4

5

6

attached.Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwith
oneoftheseparts,contactaservicetechnician.

Toreplacethepowersupplyassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Disconnectthepowersupplyassemblycablesfromalldrivesandfromthe24-pinpowerconnectorand
4-pinpowerconnectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage12

4.Laythecomputeronitssideandremovethefourscrewsattherearofthechassisthatsecurethe
powersupplyassembly.

.

Figure26.Removingthescrewsforthepowersupplyassembly

5.Slidethepowersupplyassemblytothefrontofthecomputerandthenliftitoutofthechassis.

6.Makesurethatthenewpowersupplyassemblyisthecorrectreplacement.Somepowersupply
assembliesautomaticallysensethevoltage,somepowersupplyassembliesarevoltagespecific,and
somepowersupplyassemblieshaveavoltage-selectionswitch.Ifyourpowersupplyassemblyhas
avoltage-selectionswitch,makesurethatyousetthevoltage-selectionswitchtomatchthevoltage
availableatyourelectricaloutlet.Ifnecessary,useaballpointpentoslidethevoltage-selectionswitch
tothecorrectposition.

•Ifthevoltagesupplyrangeinyourlocalcountryorregionis100–127Vac,setthevoltage-selection

switchto115V.

•Ifthevoltagesupplyrangeinyourlocalcountryorregionis200–240Vac,setthevoltage-selection

switchto230V.

7.Installthenewpowersupplyassemblyintothechassissothatthescrewholesinthepowersupply
assemblyalignwiththoseinthechassis.

8.Installandtightenthefourscrewstosecurethepowersupplyassembly.

Note:UseonlyscrewsprovidedbyLenovo.

9.Reconnectthepowersupplyassemblycablestothesystemboardandeachofthedrives.

10.Securethepowersupplyassemblycableswiththecableclipsandtiesinthechassis.

Chapter5.Installingorreplacinghardware47

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingtheheatsinkandfanassembly

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoreplacetheheatsinkandfanassembly.

CAUTION:

Theheatsinkandfanassemblymightbeveryhot.Beforeyouopenthecomputercover,turnoffthe
computerandwaitseveralminutesuntilthecomputeriscool.

Toreplacetheheatsinkandfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatetheheatsinkandfanassembly.See“Locatingcomponents”onpage11.

5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage12

.

48ThinkCentreE73UserGuide

6.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:

a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.

Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.

Figure27.Removingtheheatsinkandfanassembly

7.Liftthefailingheatsinkandfanassemblyoffthesystemboard.

Notes:

a.Youmighthavetogentlytwisttheheatsinkandfanassemblytofreeitfromthemicroprocessor.
b.Whenhandlingtheheatsinkandfanassembly,donottouchthethermalgreaseonthebottom

oftheheatsinkandfanassembly.

8.Placethenewheatsinkandfanassemblyonthesystemboardsothatthefourscrewsarealignedwith
thecorrespondingholesinthesystemboard.

Note:Positionthenewheatsinkandfanassemblysothattheheatsinkandfanassemblycableis
towardthemicroprocessorfanconnectoronthesystemboard.

9.Followthefollowingsequencetoinstallthefourscrewstosecurethenewheatsinkandfanassembly.
Donotover-tightenthescrews.

a.Partiallytightenscrew1,thenfullytightenscrew2,andthenfullytightenscrew1.
b.Partiallytightenscrew3,thenfullytightenscrew4,andthenfullytightenscrew3.

10.Connectthenewheatsinkandfanassemblycabletothemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage12.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

Chapter5.Installingorreplacinghardware49

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingthemicroprocessor

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev

Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.

CAUTION:

Theheatsinkandmicroprocessormightbeveryhot.Beforeyouopenthecomputercover,turnoff
thecomputerandwaitseveralminutesuntilthecomputeriscool.

Toreplacethemicroprocessor,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Removetheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage48.

Note:Placetheheatsinkandfanassemblyonitssidesothatthethermalgreaseonthebottomofit
doesnotgetincontactwithanything.

5.Liftthesmallhandle1andopentheretainer2toaccessthemicroprocessor3.

.

Figure28.Accessingthemicroprocessor

6.Liftthemicroprocessorstraightupandoutofthemicroprocessorsocket.

50ThinkCentreE73UserGuide

Figure29.Removingthemicroprocessor

Notes:

a.Yourmicroprocessorandsocketmightlookdifferentfromtheoneillustrated.
b.Notetheorientationofthemicroprocessorinthesocket.Youcaneitherlookforthesmalltriangle1

ononecornerofthemicroprocessorornotetheorientationofthenotches2onthemicroprocessor.
Thisisimportantwheninstallingthenewmicroprocessoronthesystemboard.

c.Touchonlytheedgesofthemicroprocessor.Donottouchthegoldcontactsonthebottom.
d.Donotdropanythingontothemicroprocessorsocketwhileitisexposed.Thesocketpinsmustbe

keptascleanaspossible.

7.Makesurethatthesmallhandleisintheraisedpositionandthemicroprocessorretainerisfullyopen.

8.Removetheprotectivecoverthatprotectsthegoldcontactsofthenewmicroprocessor.

9.Holdthenewmicroprocessorbyitssidesandalignthesmalltriangleononecornerofthenew
microprocessorwiththecorrespondingsmalltriangleononecornerofthemicroprocessorsocket.

Chapter5.Installingorreplacinghardware51

10.Lowerthenewmicroprocessorstraightdownintothemicroprocessorsocketonthesystemboard.

Figure30.Installingthemicroprocessor

11.Closethemicroprocessorretainerandlockitintopositionwiththesmallhandletosecurethenew
microprocessorinthesocket.

12.Reinstalltheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage48.

13.Reconnectallcablesthatweredisconnectedfromthesystemboard.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage64.

ReplacingthefrontaudioandUSBassembly

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

ThissectionprovidesinstructionsonhowtoreplacethefrontaudioandUSBassembly.

ToreplacethefrontaudioandUSBassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage34.

4.LocatethefrontaudioandUSBassembly.

5.DisconnectthefrontaudioandUSBassemblycablesfromthesystemboard.See“Locatingpartson
thesystemboard”onpage12.

Note:Makesurethatyounotethelocationsofthecableswhenyoudisconnectthecablesfromthe
systemboard.

52ThinkCentreE73UserGuide

6.RemovethescrewthatsecuresthefrontaudioandUSBassemblybrackettothechassistoremove
thebracketfromthechassis.

Figure31.RemovingthefrontaudioandUSBassembly

7.InstallthenewfrontaudioandUSBassemblyintothechassisandalignthescrewholeinthebracket
withthecorrespondingholeinthechassis.

8.InstallthescrewtosecurethenewfrontaudioandUSBassemblytothechassis.

9.ReconnectthefrontaudioandUSBassemblycablestothefrontaudioconnectorandthefrontUSB
connectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage12.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingtherearfanassembly

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoreplacetherearfanassembly.

Toreplacetherearfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Locatetherearfanassembly.See“Locatingcomponents”onpage11.

4.Disconnecttherearfanassemblycablefromthesystemfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage12.

Chapter5.Installingorreplacinghardware53

5.Therearfanassemblyisattachedtothechassisbyfourrubbermounts.Removetherearfanassembly
bybreakingorcuttingtherubbermountsandgentlypullingtherearfanassemblyoutofthechassis.

Note:Thenewrearfanassemblywillhavefournewrubbermountsattached.

Figure32.Removingtherearfanassembly

6.Installthenewrearfanassemblybyaligningthenewrubbermountswiththecorrespondingholesinthe
chassisandpushtherubbermountsthroughtheholes.

54ThinkCentreE73UserGuide

7.Pullonthetipsoftherubbermountsuntiltherearfanassemblyissecuredinplace.

Figure33.Installingtherearfanassembly

8.Connecttherearfanassemblycabletothesystemfanconnectoronthesystemboard.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage64.

ReplacingtheWiFiunits

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

ThissectionprovidesinstructionsonhowtoreplacetheWiFiunits.TheWiFiunitsincludeaWiFiadapter
card,aWiFicardmodule,andarearWiFiantennacable.

ReplacingtheWiFiunitsinvolvesthefollowingoperations:

•“RemovingtheWiFiadaptercard”onpage55

•“RemovingtheWiFicardmodule”onpage56

•“InstallingtheWiFiunits”onpage57

RemovingtheWiFiadaptercard

ToremoveaWiFiadaptercard,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

Chapter5.Installingorreplacinghardware55

3.Attherearofthecomputer,removethescrewthatsecuresthePCIExpresscardlatch.

3

4

5

6

4.GrasptheWiFiadaptercardthatiscurrentlyinstalledandgentlypullitoutoftheslot.

Figure34.RemovingtheWiFiadaptercard

Note:Thecardfitstightlyintothecardslot.Ifnecessary,alternatemovingeachsideofthecarda
smallamountuntilitisremovedfromthecardslot.

RemovingtheWiFicardmodule

ToremovetheWiFicardmodule,dothefollowing:

1.RemovetheWiFiadaptercardfromthecomputer,andthendisconnectthefrontandrearWiFiantenna
cablesfromtheWiFicardmodule.

Figure35.RemovingtheWiFiantennacables

56ThinkCentreE73UserGuide

2.RemovethetwoscrewsthatsecuretheWiFicardmoduletotheWiFiadaptercard.

Figure36.RemovingthescrewsthatsecuretheWiFicardmodule

3.PulltheWiFicardmoduleoutoftheminiPCIExpressslottoremoveitfromtheWiFiadaptercard.

Figure37.RemovingtheWiFicardmodule

InstallingtheWiFiunits

ToinstalltheWiFiunits,dothefollowing:

Chapter5.Installingorreplacinghardware57

1.InserttheWiFicardmoduleintotheminiPCIExpressslot,andtheninstallthetwoscrewstosecure
theWiFicardmoduletotheWiFiadaptercard.

Figure38.InstallingtheWiFicardmodule

58ThinkCentreE73UserGuide

2.ConnectthefrontantennacableandrearantennacabletotheWiFicardmodule.

3

4

5

6

Figure39.InstallingtheWiFiantennacables

3.InstalltheWiFiadaptercardintothePCIExpressx1slotonthesystemboard.See“Locatingpartson
thesystemboard”onpage12.

4.PivotthecardlatchtotheclosedpositiontosecuretheWiFiadaptercard.

Figure40.InstallingtheWiFiadaptercard

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64

Chapter5.Installingorreplacinghardware59

.

InstallingorremovingtherearWiFiantenna

3

4

5

6

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe
“Importantsafetyinformation”onpagev.

ThissectionprovidesinstructionsonhowtoinstallorremovetherearWiFiantenna.

InstallingtherearWiFiantenna

ToinstalltherearWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.InstalltherearWiFiantennatotherearWiFiantennacableconnectorattachedontherearofthe
computer.

3.Adjusttheangleoftherearantennatolowertheriskofbreakingtheantennabyaccident.

Figure41.InstallingtherearWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

RemovingtherearWiFiantenna

ToremovetherearWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.StraightentherearWiFiantennasothatitcanbemoreeasilytwisted.

60ThinkCentreE73UserGuide

3.HoldthethickerendoftherearWiFiantennaandunscrewtheWiFiantennafromtherearofthe

3

4

5

6

computer.

Figure42.RemovingtherearWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

InstallingorremovingthefrontWiFiantenna

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

ThissectionprovidesinstructionsonhowtoinstallorremovethefrontWiFiantenna.

InstallingthefrontWiFiantenna

ToinstallthefrontWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage34.

4.Peeloffthepaperthatprotectsthestickersonthefrontantenna.

Chapter5.Installingorreplacinghardware61

Figure43.Peelingoffthepaperthatprotectsthestickers

5.Stickthefrontantennatothefrontpanelasshown.Theninsertthefrontantennacablethroughthe
holeinthefrontpanel.

Figure44.InstallingthefrontWiFiantenna

6.ConnectthefrontantennacabletotheWiFicardmodule.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

62ThinkCentreE73UserGuide

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

RemovingthefrontWiFiantenna

ToremovethefrontWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage34.

4.DisconnectthefrontantennacablefromtheWiFicardmodule.

5.Removethefrontantennaandcablefromthefrontofthecomputer.

Figure45.RemovingthefrontWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Replacingthekeyboardormouse

Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe

“Importantsafetyinformation”onpagev.

Thissectionprovidesinstructionsonhowtoreplacethekeyboardormouse.

Toreplacethekeyboardormouse,dothefollowing:

1.Disconnecttheoldkeyboardcableormousecablefromthecomputer.

Chapter5.Installingorreplacinghardware63

2.ConnectanewkeyboardormousetooneoftheUSBconnectorsonthecomputer.Dependingonwhere
youwanttoconnectthenewkeyboardormouse,see“Locatingconnectors,controls,andindicatorson
thefrontofyourcomputer”onpage9or“Locatingconnectorsontherearofyourcomputer”onpage10.

Figure46.ConnectingtheUSBkeyboardormouse

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage64.

Completingthepartsreplacement

Aftercompletingtheinstallationorreplacementforallparts,youneedtoreinstallthecomputercoverand
reconnectcables.Dependingonthepartsyouinstalledorreplaced,youmightneedtoconfirmtheupdated
informationintheSetupUtilityprogram.RefertoChapter7“UsingtheSetupUtilityprogram”onpage77

.

Toreinstallthecomputercoverandreconnectcablestoyourcomputer,dothefollowing:

1.Makesurethatallcomponentshavebeenreassembledcorrectlyandthatnotoolsorloosescrews
areleftinsideyourcomputer.See“Locatingcomponents”onpage11
componentsinyourcomputer.

2.Makesurethatthecablesareroutedcorrectly.Keepcablesclearofthehingesandsidesofthe
computerchassistoavoidinterferencewithclosingthecomputercover.

3.Ifyouhaveremovedthefrontbezel,reinstallit.

forthelocationsofvarious

64ThinkCentreE73UserGuide

4.Positionthecomputercoveronthechassissothattherailguidesonthebottomofthecomputer

3

4

5

6

coverengagetherailsonthechassis.Then,pushthecovertothefrontofthecomputeruntilitsnaps
intoposition.

Figure47.Reinstallingthecomputercover

5.Ifthereisapadlockavailable,lockthecomputercover.See“Lockingthecomputercover”onpage30.

6.IfthereisaKensington-stylecablelockavailable,lockthecomputer.See“AttachingaKensington-style
cablelock”onpage31.

7.Reconnecttheexternalcablesandpowercordstothecomputer.See“Locatingconnectorsonthe
rearofyourcomputer”onpage10.

8.T oupdateyourconfiguration,refertoChapter7“UsingtheSetupUtilityprogram”onpage77.

Note:Inmostareasoftheworld,LenovorequiresthereturnofthedefectiveCustomerReplaceableUnit
(CRU).InformationaboutthiswillcomewiththeCRUorwillcomeafewdaysaftertheCRUarrives.

Obtainingdevicedrivers

Youcanobtaindevicedriversthatarenotpreinstalledinyouroperatingsystemat
http://www.lenovo.com/support.Installationinstructionsareprovidedinreadmefileswiththedevice-driver
files.

Chapter5.Installingorreplacinghardware65

66ThinkCentreE73UserGuide

Chapter6.Recoveryinformation

ThischapterprovidesinformationabouttherecoverysolutionsprovidedbyLenovo.

•“RecoveryinformationfortheWindows7operatingsystem”onpage67

•“RecoveryinformationfortheWindows8orWindows8.1operatingsystem”onpage73

•“RecoveryinformationfortheWindows10operatingsystem”onpage74

RecoveryinformationfortheWindows7operatingsystem

Thissectioncontainsthefollowingtopics:

•Creatingandusingrecoverymedia

•Performingbackupandrecoveryoperations

•UsingtheRescueandRecoveryworkspace

•Creatingandusingarescuemedium

•Installingorreinstallingdevicedrivers

•Solvingrecoveryproblems

Notes:

1.TherecoveryinformationinthischapteronlyappliestothecomputersthathavetheRescueand
RecoveryprogramortheProductRecoveryprograminstalled.IftheEnhancedBackupandRestore
iconintheLenovoThinkVantageToolsprogramisdimmed,itindicatesthatyouneedtoinstall
theRescueandRecoveryprogrammanuallybeforeenablingitsfeatures.T oinstalltheRescueand
Recoveryprogram,dothefollowing:

a.ClickStart➙AllPrograms➙LenovoThinkVantageTools,anddouble-clickEnhancedBackup

andRestore.
b.Followtheinstructionsonthescreen.
c.Whentheinstallationprocesscompletes,theEnhancedBackupandRestoreiconisactivated.

2.Thereareavarietyofmethodstochoosefromwhenconsideringhowtorecoverintheeventofa
software-orhardware-relatedproblem.Somemethodsvarydependingonthetypeofoperatingsystem
thatisinstalled.

3.Theproductontherecoverymediamaybeusedonlyforthefollowingpurposes:

•Restoretheproductpreinstalledonyourcomputer

•Reinstalltheproduct

•ModifytheproductusingtheAdditionalFiles

Creatingandusingrecoverymedia

Youcanuserecoverymediatorestoretheharddiskdrivetothefactorydefaultstate.Recoverymediaare
usefulifyoutransferthecomputertoanotherarea,sellthecomputer,recyclethecomputer,orputthe
computerinanoperationalstateafterallothermethodsofrecoveryhavefailed.Asaprecautionarymeasure,
itisimportanttocreaterecoverymediaasearlyaspossible.

Note:Therecoveryoperationsyoucanperformusingrecoverymediavarydependingontheoperating
systemfromwhichtherecoverymediawerecreated.Therecoverymediamightcontainabootmedium
andadatamedium.YourMicrosoftWindowslicensepermitsyoutocreateonlyonedatamedium,soitis
importantthatyoustoretherecoverymediainasafeplaceafteryouhavemadethem.

©CopyrightLenovo2013,2015

67

Creatingrecoverymedia

Thissectionprovidesinstructionsonhowtocreaterecoverymediaondifferentoperatingsystems.

Note:OntheWindows7operatingsystem,youcancreaterecoverymediausingdiscsorexternalUSB
storagedevices.OntheWindowsVistaoperatingsystem,youcancreaterecoverymediausingonlydiscs,
sothisoperationisalsocalled“creatingProductRecoverydiscs.”

TocreaterecoverymediaontheWindows7operatingsystem,clickStart➙AllPrograms➙Lenovo

ThinkVantageTools➙FactoryRecoveryDisks.Then,followtheinstructionsonthescreen.

Usingrecoverymedia

Thissectionprovidesinstructionsonhowtouserecoverymediaondifferentoperatingsystems.

OntheWindows7operatingsystem,youcanuserecoverymediatorestorethecontentsoftheharddisk
drivetothefactorydefaultstate.Also,youcanuserecoverymediatoputthecomputerinanoperational
stateafterallothermethodsofharddiskdriverecoveryhavefailed.

Attention:Whenyouuserecoverymediatorestorethecontentsoftheharddisktothefactorydefaultstate,
allthefilescurrentlyontheharddiskdrivewillbedeletedandreplacedbythefactorydefaultfiles.

TouserecoverymediaontheWindows7operatingsystem,dothefollowing:

1.Dependingonthetypeofyourrecoverymedia,connectthebootmedium(memorykeyorotherUSB
storagedevice)tothecomputer,orinsertthebootdiscintotheopticaldrive.

2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhenthePleaseselect
bootdevicewindowopens,releasetheF12key.

3.SelectthedesiredstartupdeviceandpressEnter.Therestoreprocessbegins.

4.Followtheinstructionsonthescreentocompletetheoperation.

Note:Afterrestoringyourcomputerharddiskdrivetothefactorydefaultstate,youmighthavetoreinstall
devicedriversforsomedevices.See“Reinstallingdevicedrivers”onpage72.

Performingbackupandrecoveryoperations

TheRescueandRecoveryprogramenablesyoutobackupallyourharddiskdrivecontentsincludingthe
operatingsystem,datafiles,softwareprograms,andpersonalsettings.Y oucandesignatewherethe
RescueandRecoveryprogramstoresthebackup:

•Inaprotectedareaofyourharddiskdrive

•Onthesecondaryharddiskdriveifasecondaryharddiskdriveisinstalledinyourcomputer

•OnanattachedexternalUSBharddiskdrive

•Onanetworkdrive

•Onrecordablediscs(arecordableopticaldriveisrequiredforthisoption)

Afteryouhavebackedupthecontentsoftheharddiskdrive,youcanrestorethecompletecontentsofthe
harddiskdrive,restoreselectedfilesonly,orrestoretheWindowsoperatingsystemandapplicationsonly
whilekeepingtheotherdataonyourharddiskdrive.

Performingabackupoperation

ThissectionprovidesinstructionsonhowtoperformabackupoperationusingtheRescueandRecovery
programondifferentoperatingsystems.

•ToperformabackupoperationusingtheRescueandRecoveryprogramontheWindows7operating
system,dothefollowing:

68ThinkCentreE73UserGuide

1.FromtheWindowsdesktop,clickStart➙AllPrograms➙LenovoThinkVantageTools➙
EnhancedBackupandRestore.TheRescueandRecoveryprogramopens.

2.IntheRescueandRecoverymainwindow,clicktheLaunchadvancedRescueandRecoveryarrow.

3.ClickBackupyourharddriveandselectbackupoperationoptions.Then,followtheinstructionson
thescreentocompletethebackupoperation.

Performingarecoveryoperation

ThissectionprovidesinstructionsonhowtoperformarecoveryoperationusingtheRescueandRecovery
programondifferentoperatingsystems.

ToperformarecoveryoperationusingtheRescueandRecoveryprogramontheWindows7operating
system,dothefollowing:

1.FromtheWindowsdesktop,clickStart➙AllPrograms➙LenovoThinkVantageT ools➙Enhanced
BackupandRestore.TheRescueandRecoveryprogramopens.

2.IntheRescueandRecoverymainwindow,clicktheLaunchadvancedRescueandRecoveryarrow.

3.ClicktheRestoreyoursystemfromabackupicon.

4.Followtheinstructionsonthescreentocompletetherecoveryoperation.

FormoreinformationaboutperformingarecoveryoperationfromtheRescueandRecoveryworkspace,see
“UsingtheRescueandRecoveryworkspace”onpage69.

UsingtheRescueandRecoveryworkspace

TheRescueandRecoveryworkspaceresidesinaprotected,hiddenareaofyourharddiskdrivethat
operatesindependentlyfromtheWindowsoperatingsystem.Thisenablesyoutoperformrecovery
operationsevenifyoucannotstarttheWindowsoperatingsystem.Youcanperformthefollowingrecovery
operationsfromtheRescueandRecoveryworkspace:

•Rescuefilesfromyourharddiskdriveorfromabackup:TheRescueandRecoveryworkspaceenables
youtolocatefilesonyourharddiskdriveandtransferthemtoanetworkdriveorotherrecordablemedia,
suchasaUSBdeviceoradisc.Thissolutionisavailableevenifyoudidnotbackupyourfilesorif
changesweremadetothefilessinceyourlastbackupoperation.Y oucanalsorescueindividualfilesfrom
aRescueandRecoverybackuponyourlocalharddiskdrive,aUSBdevice,oranetworkdrive.

•RestoreyourharddiskdrivefromaRescueandRecoverybackup:Ifyouhavebackedupyourharddisk
driveusingtheRescueandRecoveryprogram,youcanrestoretheharddiskdrivefromaRescueand
Recoverybackup,evenifyoucannotstarttheWindowsoperatingsystem.

•Restoreyourharddiskdrivetothefactorydefaultstate:TheRescueandRecoveryworkspaceenables
youtorestorethecompletecontentsofyourharddiskdrivetothefactorydefaultstate.Ifyouhave
multiplepartitionsonyourharddiskdrive,youhavetheoptiontorestoretheC:partitionandleavethe
otherpartitionsintact.BecausetheRescueandRecoveryworkspaceoperatesindependentlyfrom
theWindowsoperatingsystem,youcanrestoretheharddiskdrivetothefactorydefaultstateevenif
youcannotstarttheWindowsoperatingsystem.

Attention:IfyourestoretheharddiskdrivefromaRescueandRecoverybackuporrestoretheharddisk
drivetothefactorydefaultsettings,allfilesontheprimaryharddiskdrivepartition(usuallydriveC:)willbe
deletedintherecoveryprocess.Ifpossible,makecopiesofimportantfiles.Ifyouareunabletostartthe
Windowsoperatingsystem,youcanusetherescuefilesfeatureoftheRescueandRecoveryworkspaceto
copyfilesfromyourharddiskdrivetoothermedia.

TostarttheRescueandRecoveryworkspace,dothefollowing:

1.Makesurethatthecomputeristurnedoff.

Chapter6.Recoveryinformation69

2.T urnonyourcomputer.Whenyouseethelogoscreen,pressEnter,andthenpressF11toenterthe
RescueandRecoveryworkspace.

3.IfyouhavesetaRescueandRecoverypassword,typeyourpasswordwhenprompted.TheRescue
andRecoveryworkspaceopensafterashortdelay.

Note:IftheRescueandRecoveryworkspacefailstoopen,see“Solvingrecoveryproblems”onpage72

4.Dooneofthefollowing:

•Torescuefilesfromyourharddiskdrive,clickRescuefilesandfollowtheinstructionsonthescreen.

•TorestoreyourharddiskdrivefromaRescueandRecoverybackuportorestoreyourharddiskdrive

tothefactorydefaultsettings,clickFullRestoreandfollowtheinstructionsonthescreen.

FormoreinformationaboutthefeaturesoftheRescueandRecoveryworkspace,clickHelp.

Note:Afterrestoringyourharddiskdrivetothefactorydefaultstate,youmighthavetoreinstalldevice
driversforsomedevices.See“Reinstallingdevicedrivers”onpage72.

Creatingandusingarescuemedium

Witharescuemedium,suchasadiscoraUSBharddiskdrive,youcanrecoverthecomputerfromfailures
thatpreventyoufromgainingaccesstotheRescueandRecoveryworkspaceonyourharddiskdrive.

Notes:

1.Therecoveryoperationsyoucanperformusingarescuemediumvarydependingontheoperating
system.

2.Therescuedisccanbestartedinalltypesofopticaldrives.

Creatingarescuemedium

Thissectionprovidesinstructionsonhowtocreatearescuemediumondifferentoperatingsystems.

.

TocreatearescuemediumontheWindows7operatingsystem,dothefollowing:

1.FromtheWindowsdesktop,clickStart➙AllPrograms➙LenovoThinkVantageT ools➙Enhanced
BackupandRestore.TheRescueandRecoveryprogramopens.

2.IntheRescueandRecoverymainwindow,clicktheLaunchadvancedRescueandRecoveryarrow.

3.ClicktheCreateRescueMediaicon.TheCreateRescueandRecoveryMediawindowopens.

4.IntheRescueMediaarea,selectthetypeoftherescuemediumyouwanttocreate.Youcancreatea
rescuemediumusingadisc,aUSBharddiskdrive,orasecondaryinternalharddiskdrive.

5.ClickOKandfollowtheinstructionsonthescreentocreatearescuemedium.

Usingarescuemedium

Thissectionprovidesinstructionsonhowtousetherescuemediumyouhavecreated.

•Ifyouhavecreatedarescuemediumusingadisc,usethefollowinginstructionstousetherescuemedium:

1.T urnoffyourcomputer.

2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhenthePleaseselect
bootdevicewindowopens,releasetheF12key.

3.InthePleaseselectbootdevicewindow,selectthedesiredopticaldriveasthefirstbootdevice.
Then,inserttherescuediscintotheopticaldriveandpressEnter.Therescuemediumstarts.

•IfyouhavecreatedarescuemediumusingaUSBharddiskdrive,usethefollowinginstructionsto
usetherescuemedium:

1.AttachtheUSBharddiskdrivetooneoftheUSBconnectorsonyourcomputer.

70ThinkCentreE73UserGuide

2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhenthePleaseselect
bootdevicewindowopens,releasetheF12key.

3.InthePleaseselectbootdevicewindow,selecttheUSBharddiskdriveasthefirstbootdeviceand
pressEnter.Therescuemediumstarts.

Whentherescuemediumstarts,theRescueandRecoveryworkspaceopens.Thehelpinformationfor
eachfeatureisavailablefromtheRescueandRecoveryworkspace.Followtheinstructionstocomplete
therecoveryprocess.

Reinstallingpreinstalledapplicationsanddevicedrivers

Yourcomputerhasprovisionsthatenableyoutoreinstallselectedfactory-installedapplicationsanddevice
drivers.

Reinstallingpreinstalledapplications

Thissectionprovidesinstructionsonhowtoreinstallpreinstalledapplications.

ToreinstalltheselectedapplicationspreinstalledonyourLenovocomputer,dothefollowing:

1.T urnonthecomputer.

2.GototheC:\SWTOOLSdirectory.

3.Opentheappsfolder.Withintheappsfolder,thereareseveralsubfoldersnamedforvariousapplications
installedinyourcomputer.

4.Opentheappropriateapplicationsubfolder.

5.Intheapplicationsubfolder,lookforaSETUP.EXEfileorotherappropriateEXEfilesforsetup.
Double-clickthefileandfollowtheinstructionsonthescreentocompletetheinstallation.

Reinstallingpreinstalleddevicedrivers

Thissectionprovidesinstructionsonhowtoreinstallpreinstalleddevicedrivers.

Attention:Whenyoureinstalldevicedrivers,youarechangingthecurrentconfigurationofyourcomputer.
Reinstalldevicedriversonlywhenitisnecessarytocorrectaproblemwithyourcomputer.

Toreinstallthedevicedriverforafactory-installeddevice,dothefollowing:

1.T urnonthecomputer.

2.GototheC:\SWTOOLSdirectory.

3.OpentheDRIVERSfolder.WithintheDRIVERSfolder,thereareseveralsubfoldersnamedforvarious
devicesinstalledinyourcomputer,suchasAUDIOorVIDEO.

4.Opentheappropriatedevicesubfolder.

5.Dooneofthefollowing:

•Inthedevicesubfolder,lookforaSETUP .exefile.Double-clickthefileandfollowtheinstructionson

thescreentocompletetheinstallation.

•Inthedevicesubfolder,lookforaREADME.txtfileorafilewiththe.txtextension.Thisfilemightbe

namedaftertheoperatingsystem,suchasWIN98.txt.TheTXTfilecontainsinformationabouthowto
installthedevicedriver.Followtheinstructionstocompletetheinstallation.

•Ifthedevicesubfoldercontainsafilewiththe.infextensionandyouwanttoinstallthedevicedriver

usingtheINFfile,refertotheWindowshelpsystemfordetailedinformationabouthowtoinstall
thedevicedriver.

Note:Ifyouneedupdateddevicedrivers,see“Gettingthelatestdevicedriversforyourcomputer”on
page85

formoreinformation.

Chapter6.Recoveryinformation71

Reinstallingsoftwareprograms

Ifasoftwareprogramyouinstalledonyourcomputerisnotworkingcorrectly,youmightneedtoremove
andreinstallit.Reinstallingoverwritestheexistingprogramsfilesandusuallyfixesanyproblemsthat
youmighthavehadwiththatprogram.

Toremoveaprograminyoursystem,seeMicrosoftWindowshelpsystemfordetailedinformation.

Toreinstalltheprogram,dooneofthefollowing:

Note:Themethodofreinstallingaprogramvariesfromprogramtoprogram.Refertothedocumentation
providedwiththeprogramtoseeifyourprogramhasspecialinstallationinstructions.

•Toreinstallmostcommerciallyavailableprogramsinyoursystem,seeMicrosoftWindowshelpsystem
formoreinformation.

•ToreinstallselectedapplicationprogramsthatcamepreinstalledfromLenovo,dothefollowing:

1.T urnonthecomputer.

2.GototheC:\SWTOOLSdirectory.

3.OpentheAPPSfolder.WithintheAPPSfolder,thereareseveralsubfoldersnamedforvarious
applicationsinstalledinyourcomputer.

4.Opentheappropriateapplicationsubfolder.

5.Intheapplicationsubfolder,lookforaSETUP .EXEfileorotherappropriateEXEfilesforsetup.
Double-clickthefileandfollowtheinstructionsonthescreentocompletetheinstallation.

Reinstallingdevicedrivers

Toreinstalladevicedriverforanoptionyouinstalled,refertothedocumentationthatcomeswiththeoption.

Whenyoureinstalldevicedrivers,youarechangingthecurrentconfigurationofyourcomputer.Reinstall
devicedriversonlywhenitisnecessarytocorrectaproblemwithyourcomputer.

Formoreinformationaboutreinstallingdevicedriversthatcamewithyourcomputer,see“Reinstalling
preinstalledapplicationsanddevicedrivers”onpage71.

Solvingrecoveryproblems

IfyouareunabletoaccesstheRescueandRecoveryworkspaceortheWindowsenvironment,doone
ofthefollowing:

•UsearescuemediumtostarttheRescueandRecoveryworkspace.See“Creatingandusingarescue
medium”onpage70.

•Userecoverymediaifallothermethodsofrecoveryhavefailedandyouneedtorestoretheharddisk
drivetothefactorydefaultsettings.See“Creatingandusingrecoverymedia”onpage67.

Note:IfyouareunabletoaccesstheRescueandRecoveryworkspaceortheWindowsenvironmentfrom
arescuemediumorrecoverymedia,youmightnothavetherescuedevice(aninternalharddiskdrive,a
disc,aUSBharddiskdrive,orotherexternaldevices)setasthefirstbootdeviceinthestartupdevice
sequence.Y oumustfirstmakesurethatyourrescuedeviceissetasthefirstbootdeviceinthestartup
devicesequenceintheSetupUtilityprogram.See“Selectingastartupdevice”onpage79
informationabouttemporarilyorpermanentlychangingthestartupdevicesequence.Formoreinformation
abouttheSetupUtilityprogram,seeChapter7“UsingtheSetupUtilityprogram”onpage77.

fordetailed

Itisimportanttocreatearescuemediumandasetofrecoverymediaasearlyaspossibleandstorethem
inasafeplaceforfutureuse.

72ThinkCentreE73UserGuide

RecoveryinformationfortheWindows8orWindows8.1operating system

Thissectionprovidesinformationabouttherecoverysolutionsprovidedoncomputerspreinstalledwith
theWindows8orWindows8.1operatingsystem.

Refreshingyourcomputer

Ifyourcomputerdoesnotperformwellandtheproblemmightbecausedbyarecentlyinstalledprogram,
youcanrefreshyourcomputerwithoutlosingyourpersonalfilesorchangingyoursettings.

Attention:Ifyourefreshyourcomputer,theprogramsthatcamewithyourcomputerandtheprogramsthat
youinstalledfromWindowsStorewillbereinstalled,butallotherprogramswillberemoved.

Torefreshyourcomputer,dooneofthefollowing:

•ForWindows8:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙General.

2.IntheRefreshyourPCwithoutaffectingyourfilessection,clickGetstarted.

•ForWindows8.1:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙Updateandrecovery➙Recovery.

2.IntheRefreshyourPCwithoutaffectingyourfilessection,clickGetstarted.

Resettingyourcomputertothefactorydefaultsettings

Youcanresetyourcomputertothefactorydefaultsettings.Resettingthecomputerwillreinstallthe
operatingsystem,andreinstallalltheprogramsandsettingsthatcamewithyourcomputer.

Attention:Ifyouresetyourcomputer,allyourpersonalfilesandsettingswillbedeleted.T oavoiddataloss,
makeabackupcopyofallthedatathatyouwanttokeep.

Toresetyourcomputer,dooneofthefollowing:

•ForWindows8:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙General.

2.IntheRemoveeverythingandreinstallWindowssection,clickGetstarted.

•ForWindows8.1:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙Updateandrecovery➙Recovery.

2.IntheRemoveeverythingandreinstallWindowssection,clickGetstarted.

Usingtheadvancedstartupoptions

AdvancedstartupoptionsenableyoutochangethestartupsettingsofyourWindowsoperatingsystem,
startthecomputerfromanexternaldevice,orrestoretheWindowsoperatingsystemfromasystemimage.

Tousetheadvancedstartupoptions,dothefollowing:

•ForWindows8:

Chapter6.Recoveryinformation73

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙General.

2.IntheAdvancedstartupsection,clickRestartnow➙T roubleshoot➙Advancedoptions.

3.Restartyourcomputerfollowingtheinstructionsonthescreen.

•ForWindows8.1:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Click
Settings➙ChangePCsettings➙Updateandrecovery➙Recovery.

2.IntheAdvancedstartupsection,clickRestartnow➙T roubleshoot➙Advancedoptions.

3.Restartyourcomputerfollowingtheinstructionsonthescreen.

RecoveringyouroperatingsystemifWindows8orWindows8.1fails tostart

TheWindowsrecoveryenvironmentonyourcomputeriscapableofoperatingindependentlyfromthe
Windows8orWindows8.1operatingsystem.Thisenablesyoutorecoverorrepairtheoperatingsystem
eveniftheWindows8orWindows8.1operatingsystemfailstostart.

Aftertwoconsecutivefailedbootattempts,theWindowsrecoveryenvironmentstartsautomatically.Then
youcanchooserepairandrecoveryoptionsbyfollowingtheinstructionsonthescreen.

Note:Ensurethatyourcomputerisconnectedtoacpowerduringtherecoveryprocess.

FormoredetailsabouttherecoverysolutionsprovidedoncomputerspreinstalledwiththeWindows8
orWindows8.1operatingsystem,refertothehelpinformationsystemoftheWindows8orWindows

8.1operatingsystem.

RecoveryinformationfortheWindows10operatingsystem

TorecoveryourWindows10operatingsystem,usethefollowingsolutions:

•UseWindowsrecoverysolutions.

–UserecoverysolutionsinWindowsSettings.

1.ClicktheStartbuttontoopentheStartmenu.

2.ClickSettings➙Update&security➙Recovery.

3.Choosetheappropriaterecoverysolutionbyfollowingtheinstructionsonthescreen.

–UseSystemRestoretorestoresystemfilesandsettingstoanearlierpoint.

1.Right-clicktheStartbuttontoopentheStartcontextmenu.

2.ClickControlPanel.ViewControlPanelusingLargeiconsorSmallicons,andthenclick
Recovery➙OpenSystemRestore.

3.Followtheinstructionsonthescreen.

–UsetheFileHistorytooltorestoreyourfilesfromabackup.

Note:IfyouusetheFileHistorytooltorestoreyourfilesfromabackup,ensurethatyoubackedup
yourdataearlierwiththetool.

1.Right-clicktheStartbuttontoopentheStartcontextmenu.

2.ClickControlPanel.ViewControlPanelusingLargeiconsorSmallicons,andthenclickFile
History➙Restorepersonalfiles.

3.Followtheinstructionsonthescreen.

–UsetheWindowsrecoveryenvironmentbydoingoneofthefollowing:

74ThinkCentreE73UserGuide

–Afterseveralconsecutivefailedbootattempts,theWindowsrecoveryenvironmentmightstart

automatically.Followtheinstructionsonthescreentochoosetheappropriaterecoverysolution.

–SelecttherecoverymediumyoucreatedearlierwiththeWindowstoolasthestartupdevice.See

“Selectingatemporarystartupdevice”onpage80

.Then,followtheinstructionsonthescreen

tochoosetheappropriaterecoverysolution.

Note:Tocreatearecoverymedium,see“Goodmaintenancepractices”onpage87.

•UsetherecoveryUSBkeyprovidedbyLenovotorestoretheentirestoragedrivetothefactory-default
settings.

–IfyourcomputercomeswiththerecoveryUSBkey,followtheinstructionsshippedwiththeUSBkey.
–IfyourcomputerdoesnotcomewiththerecoveryUSBkey,contacttheLenovoCustomer

SupportCentertoorderarecoveryUSBkey.ForalistofLenovoSupportphonenumbers,goto
http://www.lenovo.com/support/phone.Ifyoucannotfindthesupporttelephonenumberforyour
countryorregion,contactyourLenovoreseller.

Chapter6.Recoveryinformation75

76ThinkCentreE73UserGuide

Chapter7.UsingtheSetupUtilityprogram

TheSetupUtilityprogramisusedtoviewandchangetheconfigurationsettingsofyourcomputer,regardless
ofwhichoperatingsystemyouareusing.However,theoperatingsystemsettingsmightoverrideanysimilar
settingsintheSetupUtilityprogram.

StartingtheSetupUtilityprogram

TostarttheSetupUtilityprogram,dothefollowing:

1.Makesurethatyourcomputeristurnedoff.

2.RepeatedlypressandreleasetheF1keywhenturningonthecomputer.Whenyouhearmultiple
beepsorseealogoscreen,releasetheF1key.

Note:IfaPower-OnPasswordoranAdministratorPasswordhasbeenset,theSetupUtilityprogram
menuwillnotbedisplayeduntilyoutypethecorrectpassword.Formoreinformation,see“Using
BIOSpasswords”onpage77

WhenthePOSTdetectsthattheharddiskdrivehasbeenremovedfromyourcomputerorthememory
modulesizehasdecreased,anerrormessagewillbedisplayedwhenyoustartthecomputerandyouwillbe
promptedtodooneofthefollowing:

•PressF1toentertheSetupUtilityprogram.

Note:AfteryouentertheSetupUtilityprogram,pressF10tosavechangesandexittheSetupUtility
program.PressEnterwhenpromptedtoconfirmtheexit.Theerrormessagewillnotbedisplayedagain.

•PressF2tobypasstheerrormessageandlogintotheoperatingsystem.

.

Note:YouhavetoenabletheconfigurationchangedetectionfeatureforthePOSTtodetecttheremovalof
theharddiskdrive.Toenabletheconfigurationchangedetectionfeature,dothefollowing:

1.StarttheSetupUtilityprogram.

2.FromtheSetupUtilityprogrammainmenu,selectSecurity➙ConfigurationChangeDetection,
andpressEnter.

3.SelectEnabledandpressEnter.

4.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedtoconfirm
theexit.

Viewingandchangingsettings

TheSetupUtilityprogrammenulistsvariousitemsaboutthesystemconfiguration.Tovieworchange
settings,starttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.Then,follow
theinstructionsonthescreen.

YoucanuseeitherthekeyboardorthemousetonavigatethroughBIOSmenuchoices.Thekeysusedto
performvarioustasksaredisplayedatthebottomofeachscreen.

UsingBIOSpasswords

ByusingtheSetupUtilityprogram,youcansetpasswordstopreventunauthorizedaccesstoyourcomputer
anddata.

©CopyrightLenovo2013,2015

77

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.

2.FromtheSetupUtilityprogrammainmenu,selectSecurity.

3.Dependingonthepasswordtype,selectSetPower-OnPassword,SetAdministratorPassword,or

HardDiskPassword.

78ThinkCentreE73UserGuide

4.Followtheinstructionsontherightsideofthescreentoset,change,ordeleteapassword.

Note:Apasswordcanbeanycombinationofupto64alphabeticandnumericcharacters.Formore
information,see“Passwordconsiderations”onpage78.

Erasinglostorforgottenpasswords(clearingCMOS)

Thissectionprovidesinstructionsonhowtoeraselostorforgottenpasswords,suchasauserpassword.

Toerasealostorforgottenpassword,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.LocatetheClearCMOS/Recoveryjumperonthesystemboard.See“Locatingpartsonthesystem
board”onpage12.

4.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).

5.Reinstallthecomputercoverandconnectthepowercord.See“Completingthepartsreplacement”
onpage64.

6.T urnonthecomputerandleaveitonforapproximately10seconds.Then,turnoffthecomputerby
holdingthepowerbuttonforapproximatelyfiveseconds.

7.Repeatstep1throughstep3.

8.MovetheClearCMOS/Recoveryjumperbacktothestandardposition(pin1andpin2).

9.Reinstallthecomputercoverandconnectthepowercord.See“Completingthepartsreplacement”
onpage64.

Enablingordisablingadevice

Thissectionprovidesinformationonhowtoenableordisableuseraccesstothefollowingdevices:

USBSetupUsethisoptiontoenableordisableaUSBconnector.WhenaUSBconnectoris

disabled,thedeviceconnectedtotheUSBconnectorcannotbeused.

SATAControllerWhenthisfeatureissettoDisable,alldevicesconnectedtotheSATAconnectors

(suchasharddiskdrivesortheopticaldrive)aredisabledandcannotbeaccessed.

Toenableordisableadevice,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.

2.FromtheSetupUtilityprogrammainmenu,selectDevices.

3.Dependingonthedeviceyouwanttoenableordisable,dooneofthefollowing:

•SelectUSBSetuptoenableordisableaUSBdevice.

•SelectATADrivesSetup➙SA TAControllertoenableordisableaSATAdevice.

4.SelectthedesiredsettingsandpressEnter.

5.PressF10tosaveandexittheSetupUtilityprogram.See“ExitingtheSetupUtilityprogram”onpage81.

Selectingastartupdevice

Ifyourcomputerdoesnotstartupfromadevicesuchasthediscorharddiskdriveasexpected,dooneof
thefollowingtoselectthestartupdeviceyouwant.

Chapter7.UsingtheSetupUtilityprogram79

Selectingatemporarystartupdevice

Usethisproceduretoselectatemporarystartupdevice.

Note:Notalldiscsandharddiskdrivesarebootable.

1.T urnoffyourcomputer.

2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhenthePleaseselect
bootdevicewindowdisplays,releasetheF12key.

3.SelectthedesiredstartupdeviceandpressEnter.Thecomputerwillstartupfromthedeviceyou
selected.

Note:SelectingastartupdevicefromthePleaseselectbootdevicewindowdoesnotpermanentlychange
thestartupsequence.

Selectingorchangingthestartupdevicesequence

Tovieworpermanentlychangetheconfiguredstartupdevicesequence,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.

2.FromtheSetupUtilityprogrammainmenu,selectStartup.

3.SelectthedevicesforthePrimaryStartupSequence,theAutomaticStartupSequence,andtheError
StartupSequence.Readtheinformationdisplayedontherightsideofthescreen.

4.PressF10tosaveandexittheSetupUtilityprogram.See“ExitingtheSetupUtilityprogram”onpage81.

EnablingErPLPScompliancemode

Lenovocomputersmeettheeco-designrequirementsoftheErPLot3regulation.Formoreinformation,go
to:
http://www.lenovo.com/ecodeclaration

YoucanenableErPLPScompliancemodeintheSetupUtilityprogramtoreducetheconsumptionof
electricitywhenyourcomputerisofforinsleepmode.

ToenableErPLPScompliancemodeintheSetupUtilityprogram,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.

2.FromtheSetupUtilityprogrammainmenu,selectPower➙EnhancedPowerSavingMode,and
pressEnter.

3.SelectEnabledandpressEnter.

4.FromthePowermenu,selectAutomaticPowerOnandpressEnter.

5.SelectWakeonLanandpressEnter.

6.SelectDisabledandpressEnter.

7.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedtoconfirm
theexit.

Note:WhenErPLPScompliancemodeisenabled,youcanwakeupyourcomputerbydoingoneof
thefollowing:

•Pressingthepowerbutton

•Enablingthewakeuponalarmfeature
Thewakeuponalarmfeatureenablesyourcomputertowakeupatasettime.Toenablethewake

uponalarmfeature,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.

80ThinkCentreE73UserGuide

2.FromtheSetupUtilityprogrammainmenu,selectPower➙AutomaticPowerOn,andpressEnter.

3.SelectWakeUponAlarmandpressEnter.Thenfollowtheinstructionsonthescreen.

4.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedto
confirmtheexit.

•Enablingtheafterpowerlossfeature
Theafterpowerlossfeatureenablesyourcomputertowakeupwhenthepowersupplyresumesaftera

suddenlossofelectricity.Toenabletheafterpowerlossfeature,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage77.

2.FromtheSetupUtilityprogrammainmenu,selectPower➙AfterPowerLoss,andpressEnter.

3.SelectPowerOnandpressEnter.

4.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedto
confirmtheexit.

ExitingtheSetupUtilityprogram

Afteryoufinishviewingorchangingsettings,pressEsctoreturntotheSetupUtilityprogrammainmenu.
YoumighthavetopressEscseveraltimes.Dooneofthefollowing:

•Ifyouwanttosavethenewsettings,pressF10tosaveandexittheSetupUtilityprogram.

•Ifyoudonotwanttosavethesettings,selectExit➙DiscardChangesandExit,andthenpress
Enter.WhentheResetWithoutSavingwindowopens,selectYes,andthenpressEntertoexitthe
SetupUtilityprogram.

•Ifyouwanttoreturntothedefaultsettings,pressF9toloadthedefaultsettings,andthenpressF10to
saveandexittheSetupUtilityprogram.

Chapter7.UsingtheSetupUtilityprogram81

82ThinkCentreE73UserGuide

Chapter8.Updatingsystemprograms

ThischapterprovidesinformationaboutupdatingthePOSTandBIOS,andhowtorecoverfromaPOST
andBIOSupdatefailure.

Usingsystemprograms

Systemprogramsarethebasiclayerofsoftwarebuiltintoyourcomputer.Systemprogramsincludethe
POST,theBIOS,andtheSetupUtilityprogram.ThePOSTisasetoftestsandproceduresthatare
performedeachtimeyouturnonyourcomputer.TheBIOSisalayerofsoftwarethattranslatesinstructions
fromotherlayersofsoftwareintoelectricalsignalsthatthecomputerhardwarecanexecute.Youcanuse
theSetupUtilityprogramtovieworchangetheconfigurationsettingsofyourcomputer.SeeChapter7
“UsingtheSetupUtilityprogram”onpage77

Yourcomputersystemboardhasamodulecalledelectricallyerasableprogrammableread-onlymemory
(EEPROM,alsoreferredtoasflashmemory).Y oucaneasilyupdatethePOST,theBIOS,andtheSetup
Utilityprogrambystartingyourcomputerwithasystem-program-updatediscorrunningaspecialupdate
programfromyouroperatingsystem.

LenovomightmakechangesandenhancementstothePOSTandBIOS.Whenupdatesarereleased,they
areavailableasdownloadablefilesontheLenovoWebsiteathttp://www.lenovo.com.Instructionsforusing
thePOSTandBIOSupdatesareavailableinaTXTfilethatisincludedwiththeupdatefiles.Formost
models,youcandownloadeitheranupdateprogramtocreateasystem-program-updatediscoranupdate
programthatcanberunfromtheoperatingsystem.

fordetailedinformation.

UpdatingtheBIOS

Whenyouinstallanewprogram,hardwaredevice,ordevicedriver,youmightbeinformedtoupdate
theBIOS.YoucanupdatetheBIOSfromyouroperatingsystemoraflashupdatedisc(supportedonly
onsomemodels).

ToupdatetheBIOS,dothefollowing:

1.Gotohttp://www.lenovo.com/drivers.

2.DownloadtheflashBIOSupdatedriverfortheoperatingsystemversionortheISOimageversion(used
tocreateaflashupdatedisc).Then,downloadtheinstallationinstructionsfortheflashBIOSupdate
driveryoudownload.

3.PrinttheinstallationinstructionsyoudownloadandfollowtheinstructionstoupdatetheBIOS.

Note:IfyouwanttoupdatetheBIOSfromaflashupdatedisc,theinstallationinstructionsmightnotprovide
theinformationabouthowtorecordtheupdatedisc.See“RecordingaCDorDVD”onpage21.

RecoveringfromaPOST/BIOSupdatefailure

IfthepowertoyourcomputerisinterruptedwhilethePOSTandBIOSisbeingupdated,yourcomputer
mightnotrestartcorrectly.Ifthishappens,performthefollowingproceduretorecoverfromthePOSTand
BIOSupdatefailure.ThisprocedureiscommonlycalledBoot-blockRecovery.

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage33.

3.LocatetheClearCMOS/Recoveryjumperonthesystemboard.See“Locatingpartsonthesystem
board”onpage12.

©CopyrightLenovo2013,2015

83

4.RemoveanycablesthatimpedeaccesstotheClearCMOS/Recoveryjumper.

5.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).

6.ReconnectanycablesthatweredisconnectedandreinstallthePCIExpresscardifremoved.

7.Reinstallthecomputercoverandreconnectthepowercordsforthecomputerandmonitortoelectrical
outlets.See“Completingthepartsreplacement”onpage64.

8.T urnonthecomputerandtheninsertthePOSTandBIOSupdate(flashupdate)discintotheoptical
drive.Waitafewminutes.Then,therecoverysessionbegins.Therecoverysessionwilltaketwoto
threeminutes.Duringthistime,awarningmessagewillbedisplayedandnoactionisneededfromyou.

9.Aftertherecoverysessioniscompleted,therewillbenovideo,andyourcomputerwillautomatically
turnoff.

10.Repeatstep1throughstep4.

11.MovetheClearCMOS/Recoveryjumperbacktothestandardposition(pin1andpin2).

12.ReconnectanycablesthatweredisconnectedandreinstallthePCIExpresscardifremoved.

13.Reinstallthecomputercoverandreconnectanycablesthatweredisconnected.

14.T urnonthecomputertorestarttheoperatingsystem.

84ThinkCentreE73UserGuide

Chapter9.Preventingproblems

Thischapterprovidesinformationthatcanhelpyouavoidcommonproblemsandkeepyourcomputer
runningsmoothly.

Keepingyourcomputercurrent

Insomesituationsyoumayfinditnecessarytohavethemostcurrentsoftwareprograms,devicedrivers,or
operatingsystem.Thissectionexplainshowtogetthelatestupdatesforyourcomputer.

Selectanyofthefollowingtopics:

•“Gettingthelatestdevicedriversforyourcomputer”onpage85

•“Gettingthelatestsystemupdates”onpage85

Gettingthelatestdevicedriversforyourcomputer

Attention:Reinstallingdevicedriverswillchangethecurrentconfigurationofyourcomputer.

Togetthelatestdevicedriversforyourcomputer,dooneofthefollowing:

•Downloadthedevicedriversthatarepreinstalledonyourcomputer.Gotohttp://www.lenovo.com/drivers.

•UsetheLenovoprogramorWindowsUpdate.See“Gettingthelatestsystemupdates”onpage85

Note:ThedevicedriversprovidedbyWindowsUpdatemightnotbetestedbyLenovo.Itisrecommended
thatyougetdevicedriversfromLenovo.

.

Gettingthelatestsystemupdates

Togetthelatestsystemupdatesforyourcomputer,ensurethatyourcomputerisconnectedtotheInternet
anddooneofthefollowing:

•UsetheSystemUpdateorLenovoCompanionprogramprovidedbyLenovotogetthesystemupdates,
suchasdevicedriverupdates,softwareupdates,andBIOSupdates.

Note:TheLenovoCompanionprogramisnotavailableonWindows7computermodels.
ToopentheSystemUpdateorLenovoCompanionprogram.See“Accessingaprogramonyour

computer”onpage5
program.

•UseWindowsUpdatetogetthesystemupdates,suchassecurityfixes,newversionsofWindows
components,anddevicedriverupdates.

1.DependingonyourWindowsversion,dooneofthefollowing:

–ForWindows7:ClicktheStartbuttontoopentheStartmenu,andthenclickControlPanel.View

ControlPanelusingLargeiconsorSmallicons,andthenclickWindowsUpdate.

–ForWindows8orWindows8.1:Movethepointertothetop-rightorbottom-rightcornerofthe

screentodisplaythecharms.Then,clickSettings➙ChangePCsettings➙Updateand
recovery➙WindowsUpdate.

–ForWindows10:ClicktheStartbuttontoopentheStartmenu.Then,clickSettings➙Update&

security➙WindowsUpdate.

2.Followtheinstructionsonthescreen.

.Formoreinformationaboutusingtheprogram,refertothehelpsystemofthe

©CopyrightLenovo2013,2015

85

Cleaningandmaintenance

Withappropriatecareandmaintenanceyourcomputerwillserveyoureliably.Thefollowingtopicsoffer
informationtohelpyoukeepyourcomputerintopworkingorder.

•“Basics”onpage86

•“Cleaningyourcomputer”onpage86

–“Computer”onpage86
–“Keyboard”onpage86
–“Opticalmouse”onpage87
–“Displayscreen”onpage87

•“Goodmaintenancepractices”onpage87

Basics

Herearesomebasicpointsaboutkeepingyourcomputerfunctioningproperly:

•Keepyourcomputerinaclean,dryenvironment.Makesurethatitrestsonaflat,steadysurface.

•Donotplaceitemsontopofthemonitororcoveranyoftheventsinthemonitororcomputer.These
ventsprovideairflowtokeepyourcomputerfromoverheating.

•Keepfoodanddrinksawayfromallpartsofyourcomputer.Foodparticlesandspillsmightmakethe
keyboardandmousestickandunusable.

•Donotgetthepowerbuttonsorothercontrolswet.Moisturecandamagethesepartsandcausean
electricalhazard.

•Alwaysdisconnectapowercordbygraspingtheplug,butnotthecord.

Cleaningyourcomputer

Itisagoodpracticetocleanyourcomputerperiodicallytoprotectthesurfacesandensuretrouble-free
operation.

CAUTION:
Besuretoturnoffthecomputerandmonitorpowerbuttonsbeforecleaningthecomputerand
monitorscreen.

Computer

Useonlymildcleaningsolutionsandadampclothtocleanthepaintedsurfacesofthecomputer.

Keyboard

Tocleanyourcomputerkeyboard,dothefollowing:

1.Applysomeisopropylrubbingalcoholtoasoft,dust-freecloth.

2.Wipeeachkeytopsurfacewiththecloth.Wipethekeysonebyone;ifyouwipeseveralkeysatatime,
theclothmayhookontoanadjacentkey,andpossiblydamageit.Makesurethatnoliquiddripsonto
orbetweenthekeys.

3.T oremoveanycrumbsordustfrombeneaththekeys,youcanuseacamerablowerwithabrush
orcoolairfromahairdryer.

Note:Avoidsprayingcleanerdirectlyontothedisplayorthekeyboard.

86ThinkCentreE73UserGuide

Opticalmouse

Thissectionprovidesinstructionsonhowtocleananopticalmouse.

Anopticalmouseusesalight-emittingdiode(LED)andanopticalsensortonavigatethepointer.Ifthe
pointeronthescreendoesnotmovesmoothlywiththeopticalmouse,youmightneedtocleanthemouse.

Tocleananopticalmouse,dothefollowing:

1.T urnoffyourcomputer.

2.Disconnectthemousecablefromthecomputer.

3.T urnthemouseupsidedowntocheckthelens.
a.Ifthereisasmudgeonthelens,gentlycleantheareawithaplaincotton-tippedswab.
b.Ifthereisdebrisinthelens,gentlyblowthedebrisawayfromthearea.

4.Checkthesurfaceonwhichyouareusingthemouse.Ifyouhaveaveryintricatepictureorpattern
beneaththemouse,itmaybedifficultforthedigitalsignalprocessor(DSP)todeterminechanges
inthemouseposition.

5.Reconnectthemousecabletothecomputer.

6.T urnyourcomputerbackon.

Displayscreen

Dustbuildupcompoundsproblemsassociatedwithglare.Remembertocleanyourmonitorscreen
periodically.See“Cleaningaflat-panelmonitorsurface”onpage87
onpage87.

or“Cleaningaglass-screensurface”

Cleaningaflat-panelmonitorsurface

Ifyouhaveaflat-panelcomputerdisplaythathasaflexiblefilmsurface,dothefollowingtocleanthespecial
surface.Wipeitgentlywithasoft,drycloth,orblowonthescreentoremovegritandotherlooseparticles.
ThenmoistenaclothwithLCDcleanerandwipethescreensurface.

Manycomputersupplystorescarrythespecialcleaningfluidsfordisplays.Usecleaningfluidsdevelopedfor
LCDdisplaysonly.Firstapplythefluidtoalint-free,softcloth,thencleantheLCDdisplay.Somecomputer
supplystorescarrypre-moistenedtowelettesforLCDmaintenance.

Cleaningaglass-screensurface

Tocleanaglass-screensurface,wipeitgentlywithasoft,drycloth,orblowonthescreentoremovegritand
otherlooseparticles.Thenuseasoftclothmoistenedwithanonabrasiveliquidglasscleaner.

Goodmaintenancepractices

Byperformingafewgoodmaintenancepractices,youcanmaintaingoodcomputerperformance,protect
yourdata,andbepreparedincaseofacomputerfailure.

•Keepyourcomputersoftware,devicedrivers,andoperatingsystemup-to-date.See“Keepingyour
computercurrent”onpage85

•Emptyyourrecyclebinonaregularbasis.

•CleanoutyourInbox,SentItems,andDeletedItemsfoldersinyoure-mailapplicationonaregularbasis.

•Cleanupfilesandfreeupstoragedrivespaceandmemoryspaceoccasionallytopreventperformance
problems.See“Performanceandlockupproblems”onpage104

•Keepalogbook.Entriesmightincludemajorsoftwareorhardwarechanges,device-driverupdates,
intermittentproblemsandwhatyoudidtoresolvethem,andotherissuesyoumighthaveexperienced.

.

.

Chapter9.Preventingproblems87

Thecauseofaproblemmightbechangeinhardware,changeinsoftware,oranyotheractionsthatmight
havetakenplace.AlogbookcanhelpyouoraLenovotechniciandeterminethecauseofaproblem.

•Backupyourdataonthestoragedriveregularly.Y oucanrestorethestoragedrivefromabackup.
Tobackupyourdata,dooneofthefollowing:

–ForWindows7:OpentheRescueandRecoveryprogram.See“Accessingaprogramonyour

computer”onpage5
oftheprogram.

–ForWindows8orWindows8.1:OpenControlPanel.ViewControlPanelusingLargeiconsorSmall

icons,andthenclickFileHistory.Followtheinstructionsonthescreen.

Note:FordetailedinformationonhowtoopenControlPanelonWindows8andWindows8.1,see
“AccessingControlPanelontheWindows8orWindows8.1operatingsystem”onpage18

–ForWindows10:Right-clicktheStartbuttontoopentheStartcontextmenu,andthenclickControl

Panel.ViewControlPanelusingLargeiconsorSmallicons,andthenclickFileHistory.Followthe
instructionsonthescreen.

•Createarecoverymediumasearlyaspossible.Youcanusetherecoverymediumtorecoveryour
operatingsystemevenifWindowsfailstostartup.

Tocreatearecoverymedium,dooneofthefollowing:

–ForWindows7:OpentheCreateRecoveryMediaprogram.See“Accessingaprogramonyour

computer”onpage5
systemoftheprogram.

–ForWindows8orWindows8.1:OpenControlPanel.ViewControlPanelusingLargeiconsorSmall

icons,andthenclickRecovery.Followtheinstructionsonthescreen.

.Formoreinformationaboutbackingupyourdata,refertothehelpsystem

.Formoreinformationaboutcreatingarecoverymedium,refertothehelp

.

Note:FordetailedinformationonhowtoopenControlPanelonWindows8andWindows8.1,see
“AccessingControlPanelontheWindows8orWindows8.1operatingsystem”onpage18.

–ForWindows10:Right-clicktheStartbuttontoopentheStartcontextmenu,andthenclickControl

Panel.ViewControlPanelusingLargeiconsorSmallicons,andthenclickRecovery.Followthe
instructionsonthescreen.

•ForWindows7,createarescuemediumasearlyaspossible.Youcanusetherescuemediumto
recoverfromfailuresthatpreventyoufromgainingaccesstotheRescueandRecoveryworkspace
onyourstoragedrive.

Tocreatearescuemedium,opentheRescueandRecoveryprogram.See“Accessingaprogramonyour
computer”onpage5
oftheprogram.

.Formoreinformationaboutcreatingarescuemedium,refertothehelpsystem

Movingyourcomputer

Takethefollowingprecautionsbeforemovingyourcomputer.

1.Backupallfilesanddatafromtheharddiskdrive.Thereareavarietyofbackupprogramsavailable
commercially.Youroperatingsystemalsomighthaveabackupprogramthatyoucanuse.Lenovo
providestheRescueandRecoveryprogramtohelpyoubackupandrestoredata.See“Performing
backupandrecoveryoperations”onpage68formoreinformation.

2.Removeallmedia(diskettes,compactdiscs,tapes,andsoon)fromthedrives.

3.T urnoffthecomputerandallattacheddevices.Y ourharddiskdriveautomaticallyparkstheread/write
headinanondataarea.Thispreventsdamagetotheharddiskdrive.

4.Unplugthepowercordsfromelectricaloutlets.

5.Disconnectcommunicationcables,suchasmodemornetworkcables,fromtheoutletsfirst,andthen
disconnecttheotherendsfromthecomputer.

88ThinkCentreE73UserGuide