Lenovo ThinkCentre M78 User Guide [en, ar, bg, br, cs, da, de, el, es, fi, fr, he, hr, hu, id, it, ko, nl, pl, pt, ro, ru, sk, sl, sr, sv, th, tr, uk, zc, zh]

ThinkCentreM78
UserGuide

MachineTypes:1562,1565,1662,1663,1765,1766,2011,2110,
2111,2112,10BN,10BQ,and10BR

Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandthe
“Importantsafetyinformation”onpagev

andAppendixA“Notices”onpage131.

EighthEdition(June2014)

©CopyrightLenovo2012,2014.

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

Modemsafetyinformation..........viii

Lasercompliancestatement..........ix

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

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

Chapter1.Productoverview......1

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

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

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

AccessingLenovoprogramsontheWindows

7operatingsystem............5

AccessingLenovoprogramsontheWindows

8orWindows8.1operatingsystem.....6

AnintroductiontoLenovoprograms.....7

Locations..................9

Locatingconnectors,controls,andindicators

onthefrontofyourcomputer........9

Locatingconnectorsontherearofyour

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

Locatingcomponents..........12

Locatingpartsonthesystemboard....13

Locatinginternaldrives.........14

Machinetypeandmodellabel.......15

Chapter2.Usingyourcomputer...17

Frequentlyaskedquestions.........17

NavigatingamongscreensontheWindows8and

Windows8.1operatingsystems........18

NavigatingonWindows8........18

NavigatingonWindows8.1........19

AccessingControlPanelontheWindows8or

Windows8.1operatingsystem........20

Usingthekeyboard.............21

UsingWindowsshortcutkeys.......21

Usingafingerprintreader........21

Usingthewheelmouse...........22

Adjustingaudio..............22

Aboutyourcomputeraudio........22

Settingthevolumefromthedesktop....22

SettingthevolumefromControlPanel...23

UsingCDsandDVDs............23

HandlingandstoringCDandDVDmedia..24

PlayingaCDorDVD..........24

RecordingaCDorDVD.........24

Chapter3.Y ouandyourcomputer..27

Accessibilityandcomfort..........27

Arrangingyourworkspace........27

Comfort...............27

Glareandlighting............28

Aircirculation.............28

Electricaloutletsandcablelengths.....28

Accessibilityinformation.........28

Registeringyourcomputer..........32

Movingyourcomputertoanothercountryor

region..................32

Chapter4.Security..........33

Securityfeatures..............33

Lockingthecomputercover.........34

Attachingacablelock............35

AttachingaKensington-stylecablelock.....36

Usingpasswords..............36

BIOSpasswords............36

Windowspasswords..........37

Configuringthefingerprintreader.......37

Usingandunderstandingfirewalls.......37

Protectingdataagainstviruses........37

Chapter5.Installingorreplacing

hardware...............39

Handlingstatic-sensitivedevices.......39

Installingorreplacinghardware........39

Installingexternaloptions........39

Removingthecomputercover.......40

Removingandreinstallingthefrontbezel..41

InstallingorreplacingaPCIcard......42

Installingorreplacingamemorymodule...45

Installingorreplacingtheopticaldrive...47

Installingorreplacingthecardreader....49

Replacingthebattery..........53

Replacingthepowersupplyassembly...54

Replacingtheheatsinkandfanassembly..56

Replacingthemicroprocessor.......58

Replacingtheprimaryharddiskdrive....60

Replacingthesecondaryharddiskdrive...62

©CopyrightLenovo2012,2014

i

Installingthesolid-statedrive.......64

Replacingthefrontfanassembly.....66

Replacingtherearfanassembly......67

ReplacingthefrontaudioandUSB

assembly...............69

Replacingtheinternalspeaker.......70

Replacingthethermalsensor.......72

Replacingthecoverpresenceswitch....74

ReplacingtheWiFiunits.........76

InstallingorremovingtherearWiFiantenna.82
InstallingorremovingthefrontWiFiantenna.83

Replacingthekeyboardormouse.....85

Completingthepartsreplacement.....86

Chapter6.Recoveryinformation...89

RecoveryinformationfortheWindows7operating

system..................89

Creatingandusingrecoverymedia.....89

Performingbackupandrecoveryoperations.90
UsingtheRescueandRecoveryworkspace.91

Creatingandusingarescuemedium....92

Reinstallingpreinstalledapplicationsand

devicedrivers.............93

Reinstallingsoftwareprograms......94

Reinstallingdevicedrivers........94

Solvingrecoveryproblems........94

RecoveryinformationfortheWindows8or

Windows8.1operatingsystem........95

Refreshingyourcomputer........95

Resettingyourcomputertothefactorydefault

settings................95

Usingtheadvancedstartupoptions....95

RecoveringyouroperatingsystemifWindows

8orWindows8.1failstostart.......96

Chapter7.UsingtheSetupUtility

program................97

StartingtheSetupUtilityprogram.......97

Viewingandchangingsettings........97

Usingpasswords..............97

Passwordconsiderations.........98

Power-OnPassword..........98

AdministratorPassword.........98

HardDiskPassword...........98

Setting,changing,anddeletingapassword.98
Erasinglostorforgottenpasswords(clearing

CMOS)................99

Enablingordisablingadevice........99

Selectingastartupdevice..........100

Selectingatemporarystartupdevice....100

Selectingorchangingthestartupdevice

sequence...............100

EnablingErPLPScompliancemode......100

ICEperformancemode...........101

ICEthermalalert..............101

ExitingtheSetupUtilityprogram.......102

Chapter8.Updatingsystem

programs..............103

Usingsystemprograms...........103

Updating(flashing)theBIOSfromadisc....103

Updating(flashing)theBIOSfromyouroperating

system..................104

RecoveringfromaPOST/BIOSupdatefailure..104

Chapter9.Preventingproblems..105

Keepingyourcomputercurrent........105

Gettingthelatestdevicedriversforyour

computer...............105

Updatingyouroperatingsystem......105

UsingSystemUpdate..........106

Cleaningandmaintenance..........106

Basics................106

Cleaningyourcomputer.........107

Goodmaintenancepractices.......108

Movingyourcomputer...........108

Chapter10.Troubleshootingand

diagnostics.............109

Basictroubleshooting............109

Troubleshootingprocedure..........110

Troubleshooting..............110

Audioproblems............111

CDproblems.............112

DVDproblems.............113

Intermittentproblems..........115

Keyboard,mouse,orpointingdevice

problems...............115

Monitorproblems............117

Networkingproblems..........119

Optionproblems............121

Performanceandlockupproblems.....122

Printerproblems............124

Serialportproblems...........124

Softwareproblems...........125

USBproblems.............126

LenovoSolutionCenter...........126

Chapter11.Gettinginformation,help,

andservice.............127

Informationresources............127

LenovoThinkVantageT ools........127

HelpandSupport............127

SafetyandWarranty...........127

iiThinkCentreM78UserGuide

LenovoWebsite............127

LenovoSupportWebsite.........128

Helpandservice..............128

Usingthedocumentationanddiagnostic

program...............128

Callingforservice............128

Usingotherservices..........129

Purchasingadditionalservices......129

AppendixA.Notices.........131

Trademarks................132

AppendixB.Regulatory

information.............133

Exportclassificationnotice..........133

Electronicemissionsnotices.........133

FederalCommunicationsCommission

DeclarationofConformity........133

Eurasiancompliancemark..........135

Brazilregulatorynotice...........135

Mexicoregulatorynotice...........135

Additionalregulatoryinformation.......135

AppendixC.WEEEandrecycling

information.............137

ImportantWEEEinformation.........137

RecyclinginformationforJapan........137

RecyclinginformationforBrazil........138

BatteryrecyclinginformationforT aiwan.....138

BatteryrecyclinginformationfortheEuropean

Union..................138

AppendixD.RestrictionofHazardous

SubstancesDirective(RoHS)....141

EuropeanUnionRoHS...........141

ChinaRoHS................141

TurkishRoHS...............141

UkraineRoHS...............142

IndiaRoHS................142

AppendixE.ChinaEnergyLabel..143

AppendixF .ENERGYST ARmodel

information.............145

Index.................147

©CopyrightLenovo2012,2014

iii

ivThinkCentreM78UserGuide

Importantsafetyinformation

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

IfyounolongerhaveacopyoftheSafety,Warranty,andSetupGuide,youcanobtainaPortableDocument
Format(PDF)versionfromtheLenovo
SupportWebsitealsoprovidestheSafety,Warranty,andSetupGuideandthisUserGuideinadditional
languages.

®

SupportWebsiteathttp://www.lenovo.com/support.TheLenovo

Serviceandupgrades

DonotattempttoserviceaproductyourselfunlessinstructedtodosobytheCustomerSupportCenteror
yourdocumentation.OnlyuseaServiceProviderwhoisapprovedtorepairyourparticularproduct.

Note:Somecomputerpartscanbeupgradedorreplacedbythecustomer.Upgradestypicallyare
referredtoasoptions.ReplacementpartsapprovedforcustomerinstallationarereferredtoasCustomer
ReplaceableUnits,orCRUs.Lenovoprovidesdocumentationwithinstructionswhenitisappropriatefor
customerstoinstalloptionsorreplaceCRUs.Y oumustcloselyfollowallinstructionswheninstallingor
replacingparts.TheOffstateofapowerindicatordoesnotnecessarilymeanthatvoltagelevelsinsidea
productarezero.Beforeyouremovethecoversfromaproductequippedwithapowercord,alwaysensure
thatthepoweristurnedoffandthattheproductisunpluggedfromanypowersource.Formoreinformation
onCRUs,refertoChapter5“Installingorreplacinghardware”onpage39
concerns,contacttheCustomerSupportCenter.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafety.

CAUTION:

.Ifyouhaveanyquestionsor

Hazardousmovingparts.Keepfingersandotherbodypartsaway.

CAUTION:

Beforeyouopenthecomputercover,turnoffthecomputerandwaitseveralminutesuntilthe
computeriscool.

Staticelectricityprevention

Staticelectricity,althoughharmlesstoyou,canseriouslydamagecomputercomponentsandoptions.
Improperhandlingofstatic-sensitivepartscancausedamagetothepart.Whenyouunpackanoption

©CopyrightLenovo2012,2014

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.

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.

viThinkCentreM78UserGuide

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.

©CopyrightLenovo2012,2014

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.

Modemsafetyinformation

CAUTION:
Toreducetheriskoffire,useonlyNo.26AWGorlarger(forexample,No.24AWG)telecommunication
linecordlistedbyUnderwritersLaboratories(UL)orcertifiedbytheCanadianStandardsAssociation
(CSA).

Toreducetheriskoffire,electricalshock,orinjurywhenusingtelephoneequipment,alwaysfollowbasic
safetyprecautions,suchas:

•Neverinstalltelephonewiringduringalightningstorm.

•Neverinstalltelephonejacksinwetlocationsunlessthejackisspecificallydesignedforwetlocations.

•Nevertouchuninsulatedtelephonewiresorterminalsunlessthetelephonelinehasbeendisconnectedat
thenetworkinterface.

•Usecautionwheninstallingormodifyingtelephonelines.

•Avoidusingatelephone(otherthanacordlesstype)duringanelectricalstorm.Theremaybearemote
riskofelectricshockfromlightning.

•Donotusethetelephonetoreportagasleakinthevicinityoftheleak.

viiiThinkCentreM78UserGuide

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.

Powersupplystatement

Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

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

Cleaningandmaintenance

Keepyourcomputerandworkspaceclean.Shutdownthecomputerandthendisconnectthepower
cordbeforecleaningthecomputer.Donotsprayanyliquiddetergentdirectlyonthecomputeroruse
anydetergentcontainingflammablematerialtocleanthecomputer.Spraythedetergentonasoftcloth
andthenwipethecomputersurfaces.

©CopyrightLenovo2012,2014

ix

xThinkCentreM78UserGuide

Chapter1.Productoverview

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

Features

Thissectionintroducesthecomputerfeatures.Theinformationcoversavarietyofmodels.

Toviewtheinformationaboutyourspecificmodel,dooneofthefollowing:

•GointotheSetupUtilityprogrambyfollowingtheinstructionsinChapter7“UsingtheSetupUtility
program”onpage97

•OntheMicrosoft
toviewtheinformation.

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

infotoviewtheinformation.

Microprocessor

Toviewthemicroprocessorinformationofyourcomputer,dothefollowing:

•OntheWindows7operationsystem,clickStart,right-clickComputer,andselectPropertiestoview
theinformation.

•OntheWindows8orWindows8.1operatingsystem,gotothedesktopandmoveyourpointertothe
top-rightorbottom-rightcornerofthescreentodisplaythecharms.ThenclickSettings➙PCinfoto
viewtheinformation.

.Then,selectMain➙SystemSummarytoviewtheinformation.

®

Windows

®

7operationsystem,clickStart,right-clickComputer,andselectProperties

Memory

Yourcomputersupportsuptofourdoubledatarate3unbuffereddualinlinememorymodules(DDR3
UDIMMs).

Internaldrives

•Hybriddrive(availableinsomemodels)

•Opticaldrive:DVD-ROMorDVD-R(availableinsomemodels)

•SerialAdvancedT echnologyAttachment(SATA)harddiskdrive

•Solid-statedrive(availableinsomemodels)

Note:YourcomputersupportsSAT A2.0andSATA3.0devices.Formoreinformation,see“Locatingparts
onthesystemboard”onpage13

Videosubsystem

•IntegratedgraphicsforaVideoGraphicsArray(VGA)connectorandaDisplayPort®connector

•PeripheralComponentInterconnect(PCI)Expressx16graphicscardslotonthesystemboardfora
discretegraphicscard

Audiosubsystem

.

©CopyrightLenovo2012,2014

1

•Integratedhigh-definition(HD)audio

•Audioline-inconnector,audioline-outconnector,andmicrophoneconnectorontherearpanel

•Microphoneconnectorandheadphoneconnectoronthefrontpanel

•Internalspeaker(installedinsomemodels)

Connectivity

•100/1000MbpsintegratedEthernetcontroller

•IEEE1394adapter(installedinsomemodels)

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”onpage100

.

•PrebootExecutionEnvironment(PXE)
ThePrebootExecutionEnvironmentisanenvironmenttostartcomputersusinganetworkinterface

independentofdatastoragedevices(suchastheharddiskdrive)orinstalledoperatingsystems.

•IntelligentCoolingEngine(ICE)
TheIntelligentCoolingEngineisasystemthermalmanagementsolutionthatenablesyourcomputer

torunwithbetterthermalandacousticperformance.TheICEfunctionalsomonitorsthethermal
performanceofyourcomputertoidentifythermalproblems.Formoreinformation,see“ICEperformance
mode”onpage101

and“ICEthermalalert”onpage101.

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

applicationtostoreandretrieveinformationspecificaboutthecomputerinquestion.

•WakeonLAN
WakeonLANisanEthernetcomputernetworkingstandardthatallowsacomputertobeturnedon

orwokenupbyanetworkmessage.Themessageisusuallysentbyaprogramrunningonanother
computeronthesamelocalareanetwork.

•WakeonRing
WakeonRing,sometimesreferredtoasWakeonModem,isaspecificationthatallowssupported

computersanddevicestoresumefromsleeporhibernationmode.

•WindowsManagementInstrumentation(WMI)
WindowsManagementInstrumentationisasetofextensionstotheWindowsDriverModel.Itprovidesan

operatingsysteminterfacethroughwhichinstrumentedcomponentsprovideinformationandnotification.

2ThinkCentreM78UserGuide

Input/Output(I/O)features

•9-pinserialport(onestandardandoneoptional)

•DisplayPortconnector(onestandardandoneoptional)

•EightUniversalSerialBus(USB)connectors(twoonthefrontpanelandsixontherearpanel)

•OneEthernetconnector

•OnePersonalSystem/2(PS/2)keyboardconnector(optional)

•OnePS/2mouseconnector(optional)

•OneVGAmonitorconnector

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

•Twoaudioconnectorsonthefrontpanel(microphoneconnectorandheadphoneconnector)

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

and“Locatingconnectorsontherearofyourcomputer”onpage10.

Expansion

•OnePCIExpressx1cardslot

•OnePCIExpressx16graphicscardslot

•Twoharddiskdrivebays

•Twoopticaldrivebays

•TwoPCIcardslots

Formoreinformation,see“Locatinginternaldrives”onpage14

.

Powersupply

Yourcomputercomeswithoneofthefollowingtypesofpowersupply:

•280-wattautomaticvoltage-sensingpowersupply

•450-wattautomaticvoltage-sensingpowersupply

Securityfeatures

•AbilitytoenableanddisableUSBconnectorsindividually

•Abilitytoenableordisableadevice

•ComputraceAgentsoftwareembeddedinfirmware

•Coverpresenceswitch(alsocalledintrusionswitch)

•Keyboardwithfingerprintreader(shippedwithsomemodels)

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

•Startupsequencecontrol

•Startupwithoutkeyboardormouse

•Supportforacablelock

•Supportforapadlock

•SupportforaKensington-stylecablelock

•TrustedPlatformModule(TPM)

Chapter1.Productoverview3

Formoreinformation,seeChapter4“Security”onpage33.

Preinstalledsoftwareprograms

Yourcomputerispreinstalledwithsoftwareprogramstohelpyouworkmoreeasilyandsecurely.Formore
information,see“Lenovoprograms”onpage5.

Preinstalledoperatingsystem

Yourcomputerispreinstalledwithoneofthefollowingoperatingsystems:

•MicrosoftWindows7operatingsystem

•MicrosoftWindows8operatingsystem

•MicrosoftWindows8.1operatingsystem

Operatingsystem(s),certifiedortestedforcompatibility

•Linux

®

•MicrosoftWindowsXPProfessionalSP3

1

(variesbymodeltype)

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

4ThinkCentreM78UserGuide

Specifications

Thissectionliststhephysicalspecificationsforyourcomputer.

Dimensions

Width:175mm(6.89inches)
Height:414mm(16.30inches)
Depth:442mm(17.40inches)

Weight

Maximumconfigurationasshipped:11kg(24.25lb)

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

Electricalinput

•Inputvoltage:

–Lowrange:

Minimum:100Vac
Maximum:127Vac
Inputfrequency:50/60Hz

–Highrange:

Minimum:200Vac
Maximum:240Vac
Inputfrequency:50/60Hz

Lenovoprograms

YourcomputercomeswithLenovoprogramstohelpyouworkmoreeasilyandsecurely.Dependingon
theWindowsoperatingsystempreinstalled,theprogramsmightvary.

AccessingLenovoprogramsontheWindows7operatingsystem

YoucanaccessLenovoprogramsontheWindows7operatingsystemthroughWindowsSearchorfrom
ControlPanel.TheiconnamedisplayedinthesearchresultorControlPanelmightbedifferentfromthe
programname.Y oucanfindtheprogrambyitsprogramnameoriconnameasshownintheLenovo
programsavailableontheWindows7operatingsystemtable.

Chapter1.Productoverview5

Note:Ifyoudonotfindtheprogramyouneed,opentheLenovoThinkVantage

®

Toolsprogramtofindthe

dimmediconfortheprogram.Thendouble-clicktheicontoinstalltheprogram.

ToaccessLenovoprogramsthroughWindowsSearch,dothefollowing:

1.ClicktheStartbuttonandthentypetheprogramnameortheiconnameintothesearchbox.

2.Locatetheprogrambytheprogramnameortheiconnameandthenclicktheprogramtolaunchit.

ToaccessLenovoprogramsfromControlPanel,dothefollowing:

Note:SomeLenovoprogramsmightnotbedisplayedinControlPanel.Tofindtheseprograms,use

WindowsSearch.

1.ClickStart➙ControlPanel.ChangetheviewofControlPanelfromCategorytoLargeiconsorSmall
icons.

2.Locatetheprogrambytheiconnameandthenclicktheprogramtolaunchit.

ThefollowingtableliststheprogramsavailableontheWindows7operatingsystem.

Note:Dependingonyourcomputermodel,someoftheLenovoprogramsmightnotbeavailable.

Table1.LenovoprogramsavailableontheWindows7operatingsystem

ProgramnameIconname

CommunicationsUtilityLenovo-WebConferencing

FingerprintManagerProor
ThinkVantageFingerprintSoftware

LenovoBluetoothLockLenovoBluetoothLock

LenovoReachLenovoReach

LenovoSHAREitLenovoSHAREit

LenovoSolutionCenterLenovo-SystemHealthandDiagnostics

LenovoThinkVantagetoolsLenovoThinkvantagetools

PasswordManagerLenovo-PasswordVault

PCCloudManagerPCCloudManager

PowerManager

RecoveryMedia

RescueandRecovery

SystemUpdate

ViewManagementUtilityLenovo-ViewManagementUtility

®

Lenovo-FingerprintManagerProorLenovo-FingerprintReader

Lenovo-PowerControls

Lenovo-FactoryRecoveryDisksorCreateRecoveryMedia

Lenovo-EnhancedBackupandRestore

Lenovo-UpdateandDrivers

AccessingLenovoprogramsontheWindows8orWindows8.1operating system

IfyourcomputerispreinstalledwiththeWindows8orWindows8.1operatingsystem,youcanaccess
Lenovoprogramsbydoingoneofthefollowing:

•OntheWindows8operatingsystem,presstheWindowskeytogototheStartscreen.ClickaLenovo
programtolaunchit.Ifyoucannotfindtheprogramyouneed,movethepointertothebottom-rightcorner
ofthescreentodisplaythecharms.ThenclicktheSearchcharmtosearchforthedesiredprogram.

6ThinkCentreM78UserGuide

•OntheWindows8.1operatingsystem,presstheWindowskeytogototheStartscreen.Clicka
Lenovoprogramtolaunchit.Ifyoucannotfindtheprogramyouneed,clickthearrowiconinthe

bottom-leftcornerofthescreentogototheAppsscreen.Findthedesiredprogramintheappslistor
searchforitinthesearchboxinthetop-rightcornerofthescreen.

YourcomputermightsupportthefollowingLenovoprograms:

Note:Dependingonyourcomputermodel,someoftheprogramsmightnotbeavailable.

•FingerprintManagerProorThinkVantageFingerprintSoftware

•LenovoBluetoothLock

•LenovoCompanion

•LenovoReach

•LenovoSHAREit

•LenovoSolutionCenter

•LenovoSupport

•LenovoTools

•PasswordManager

•PCCloudManager

•PowerManager

•SystemUpdate

AnintroductiontoLenovoprograms

ThistopicprovidesabriefintroductiontosomeLenovoprograms.

Note:Dependingonyourcomputermodel,someoftheprogramsmightnotbeavailable.

•CommunicationsUtility(Windows7)
TheCommunicationsUtilityprogramprovidesacentrallocationforintegratedcameraandmicrophone

settings.ItcontrolsadvancedsettingsfortheintegratedmicrophoneandcameratooptimizeWeb
conferencingandVoiceoverIP(VOIP)experience.

•FingerprintManagerProorThinkVantageFingerprintSoftware(Windows7,Windows8,and

Windows8.1)

Theintegratedfingerprintreaderprovidedonsomekeyboardsenablesyoutoenrollyourfingerprint
andassociateitwithyourpower-onpassword,harddiskpassword,andWindowspassword.Asa
result,fingerprintauthenticationcanreplacepasswordsandenablesimpleandsecureuseraccess.A
fingerprintreaderkeyboardisavailablewithselectcomputersorcanbepurchasedforcomputersthat
supportthisoption.

•LenovoBluetoothLock(Windows7andWindows8.1)
TheLenovoBluetoothLockprogramenablesyoutouseaBluetoothdevice(suchasyoursmartphone)as

aproximity-basedunitforlockingorunlockingyourcomputerautomatically.Bydetectingthedistance
betweenyourcomputerandthepredefinedBluetoothdevicethatyouarecarrying,theLenovoBluetooth
Lockprogramautomaticallylocksyourcomputerwhenyouwalkawayandunlocksyourcomputerwhen
youcomeback.Thisisasimplewaytoprotectyourcomputeragainstunauthorizedaccessincase
thatyouforgettolockyourcomputer.

•LenovoCompanion(Windows8andWindows8.1)
ThroughtheLenovoCompanionprogram,youcangettheinformationabouttheaccessoriesforyour

computer,viewblogsandarticlesaboutyourcomputer,andcheckforotherrecommendedprograms.

Chapter1.Productoverview7

•LenovoReach(Windows7,Windows8,andWindows8.1)
UsetheLenovoReachprogramtoenhanceyourcloudexperience.LenovoReachkeepsyouconnected

atalltimesandenablesyoutoaccessallyourfavoriteitemsfrompersonalcomputers,smartphones,
ortablets.Asaresult,youcanaccess,edit,andshareyourfilesfromanywhere.WithLenovoReach,
youalsocanaddyourfavoriteWebservicestoyourclouddesktopandstaylogged-intoWebsiteswith
thecloudpasswordmanager.

•LenovoSHAREit(Windows7,Windows8,andWindows8.1)
TheLenovoSHAREitprogramprovidesaquickandeasywaytosharefilesandfoldersamongcomputers,

smartphones,tablets,orsmartTVswiththeAndroidortheWindowsoperatingsysteminstalled.SHAREit
usesanytypeofnetworkorevennonetworkatalltosharefilesandfolders.

•LenovoSolutionCenter(Windows7,Windows8,andWindows8.1)
TheLenovoSolutionCenterprogramenablesyoutotroubleshootandresolvecomputerproblems.It

combinesdiagnostictests,systeminformationcollection,securitystatus,andsupportinformation,along
withhintsandtipsformaximumsystemperformance.

•LenovoSupport(Windows8andWindows8.1)
TheLenovoSupportprogramenablesyoutoregisteryourcomputerwithLenovo,checkthecomputer

healthconditionandbatterystatus,downloadandviewusermanualsforyourcomputer,getthewarranty
informationofyourcomputer,andexplorehelpandsupportinformation.

•LenovoThinkVantageTools(Windows7)
TheLenovoThinkVantageToolsprogramguidesyoutoahostofinformationsourcesandprovideseasy

accesstovarioustoolstohelpyouworkmoreeasilyandsecurely.

•LenovoTools(Windows8andWindows8.1)
TheLenovoToolsprogramguidesyoutoahostofinformationsourcesandprovideseasyaccessto

varioustoolstohelpyouworkmoreeasilyandsecurely.

•PasswordManager(Windows7,Windows8,andWindows8.1)
ThePasswordManagerprogramautomaticallycapturesandfillsinauthenticationinformationfor

WindowsprogramsandWebsites.

•PCCloudManager(Windows7andWindows8.1)
ThePCCloudManager(PCM)programisabrowser-basedsolutionforclient-computermanagement.

ThePCMprogramhastwocomponents:PCMServerandPCMClient.PCMServerisinstalledonthe
computer,wheretheadministratorperformsmanagementwork,suchaspowermanagementandsecurity
management.PCMClientisinstalledontheclientcomputerstobemanaged.Theadministratorcanlog
intoPCMServertomanagecomputerswithPCMClientinstalled,throughtheInternetWebbrowser.

•PowerManager(Windows7,Windows8,andWindows8.1)
ThePowerManagerprogramprovidesconvenient,flexible,andcompletepowermanagementforyour

computer.Itenablesyoutoadjustyourcomputerpowersettingstoachievethebestbalancebetween
performanceandpowersaving.

•RecoveryMedia(Windows7)
TheRecoveryMediaprogramenablesyoutorestorethecontentsoftheharddiskdrivetothefactory

defaultsettings.

•RescueandRecovery(Windows7)
TheRescueandRecoveryprogramisaone-buttonrecoveryandrestoresolutionthatincludesasetof

self-recoverytoolstohelpyoudiagnosecomputerproblems,gethelp,andrecoverfromsystemcrashes,
evenifyoucannotstarttheWindowsoperatingsystem.

•SystemUpdate(Windows7,Windows8,andWindows8.1)

8ThinkCentreM78UserGuide

TheSystemUpdateprogramhelpsyoukeepthesoftwareonyourcomputerup-to-datebydownloading
andinstallingsoftwareupdatepackages(Lenovoprograms,devicedrivers,UEFIBIOSupdates,and
otherthirdpartyprograms).

•ViewManagementUtility(Windows7)
TheViewManagementUtilityprogramenablesyoutoeasilyorganizeyouropenwindows.Itdividesyour

screenintomultiplepartsandthenresizesandpositionsopenwindowsintodifferentpartstomakethe
bestuseofyourdesktop.Theprogramalsoisabletoworkacrossmultiplemonitorstoimproveyour
productivity.

Locations

Thissectionprovidesinformationtohelpyoulocatetheconnectorsonthefrontandrearofyourcomputer,
partsonthesystemboard,andcomponentsandinternaldrivesinyourcomputer.

Locatingconnectors,controls,andindicatorsonthefrontofyour computer

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

Figure1.Frontconnector,control,andindicatorlocations

1Harddiskdriveactivityindicator2Powerindicator

3Powerswitch

5USB2.0connector(USBport1)

7Microphoneconnector

4Opticaldriveeject/closebutton

6Headphoneconnector

8USB2.0connector(USBport2)

Chapter1.Productoverview9

Locatingconnectorsontherearofyourcomputer

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

Figure2.Rearconnectorlocations

1Powercordconnector

3PS/2keyboardandmouseconnectors(optional)4VGAmonitorconnector

5DisplayPortconnector1

7USB2.0connectors(USBports3and4)

9Microphoneconnector10Audioline-outconnector

11Audioline-inconnector

13PCIExpressx1cardslot14PCIcardslots(2)

15Cable-lockslots(2)16Optionalserialport(Serialport2)

17DisplayPortconnector2(optional)

2Serialport(Serialport1)

6USB3.0connectors(USBports5to8)

8Ethernetconnector

12PCIExpressx16graphicscardslot

Note:Ifyourcomputerisinstalledwithagraphicscard,ensurethatyouusethemonitorconnectorson
thegraphicscard.

10ThinkCentreM78UserGuide

ConnectorDescription

Audioline-inconnector

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

Audioline-outconnector

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

DisplayPortconnector

Usedtoattachahigh-performancemonitor,adirect-drivemonitor,orotherdevices
thatuseaDisplayPortconnector.

Ethernetconnector

UsedtoattachanEthernetcableforalocalareanetwork(LAN).
Note:T ooperatethecomputerwithinFCCClassBlimits,useaCategory5Ethernet
cable.

Microphoneconnector

Usedtoattachamicrophonetoyourcomputerwhenyouwanttorecordsoundorif
youusespeech-recognitionsoftware.

PS/2keyboardconnector

UsedtoattachakeyboardthatusesaPS/2keyboardconnector.

(optional)

PS/2mouseconnector
(optional)

Serialport

Usedtoattachamouse,atrackball,orotherpointingdevicesthatuseaPS/2
mouseconnector.

Usedtoattachanexternalmodem,aserialprinter,orotherdevicesthatusea
9-pinserialport.

USB2.0connectorUsedtoattachadevicethatrequiresaUSB2.0connector,suchasaUSB

keyboard,aUSBmouse,aUSBscanner,oraUSBprinter.Ifyouhavemorethan
eightUSBdevices,youcanpurchaseaUSBhub,whichyoucanusetoconnect
additionalUSBdevices.

USB3.0connectorUsedtoattachadevicethatrequiresaUSB2.0or3.0connector,suchasaUSB

keyboard,aUSBmouse,aUSBscanner,oraUSBprinter.Ifyouhavemorethan
eightUSBdevices,youcanpurchaseaUSBhub,whichyoucanusetoconnect
additionalUSBdevices.

VGAmonitorconnectorUsedtoattachaVGAmonitororotherdevicesthatuseaVGAmonitorconnector.

Chapter1.Productoverview11

Locatingcomponents

Figure3“Componentlocations”onpage12showsthelocationsofthevariouscomponentsinyour
computer.Toremovethecomputercover,see“Removingthecomputercover”onpage40.

Figure3.Componentlocations

1Heatsinkandfanassembly

3Opticaldrive4FrontaudioandUSBassembly

5Thermalsensor

7Frontfanassembly(installedinsomemodels)8Secondaryharddiskdrive(installedinsomemodels)

9Secondaryharddiskdrivebay

11PCIcard(installedinsomemodels)12Coverpresenceswitch(intrusionswitch)(installed

2Memorymodules

6Internalspeaker(installedinsomemodels)

10Primaryharddiskdrive

insomemodels)

13Rearfanassembly

15Microprocessor

14Powersupplyassembly

12ThinkCentreM78UserGuide

Locatingpartsonthesystemboard

Figure4“Systemboardpartlocations”onpage13showsthelocationsofthepartsonthesystemboard.

Figure4.Systemboardpartlocations

14-pinpowerconnector2Microprocessor

3Microprocessorfanconnector

5Memoryslot2(DIMM2)6Memoryslot3(DIMM3)

7Memoryslot4(DIMM4)

94-pinpowerconnectors(2)

11Battery

13Powerfanconnector

15Frontpanelconnector(forconnectingLEDindicators

andthepowerswitch)

17FrontUSBconnector2(forconnectinganadditional

USBdevice)

19Serial(COM2)connector

21Frontaudioconnector

23PCIExpressx1cardslot24PCIExpressx16graphicscardslot

25Coverpresenceswitchconnector(intrusionswitch

4Memoryslot1(DIMM1)

8Thermalsensorconnector

1014-pinpowerconnector

12SATA3.0connectors(4)

14Parallelconnector

16FrontUSBconnector1(forconnectingUSBports

1and2onthefrontbezel)

18ClearCMOS(ComplementaryMetalOxide

Semiconductor)/Recoveryjumper

20Internalspeakerconnector

22PCIcardslots(2)

26Systemfanconnector

connector)

27DisplayPortconnector

28PS/2keyboardandmouseconnector

Chapter1.Productoverview13

Locatinginternaldrives

Internaldrivesaredevicesthatyourcomputerusestoreadandstoredata.Youcanadddrivestoyour
computertoincreasestoragecapacityandenableyourcomputertoreadothertypesofmedia.Internal
drivesareinstalledinbays.

Wheninstallingorreplacinganinternaldrive,itisimportanttonotethetypeandsizeofthedrivethatyou
caninstallorreplaceineachbayandcorrectlyconnectthecablestothedriveinstalled.Refertothe
appropriatesectionin“Installingorreplacinghardware”onpage39
replaceinternaldrivesforyourcomputer.

Figure5“Drivebaylocations”onpage14showsthelocationsofthedrivebays.

forinstructionsonhowtoinstallor

Figure5.Drivebaylocations

1Bay1-Opticaldrivebay(withanopticaldriveinstalledinsomemodels)

2Bay2-Opticaldrivebay

3Bay3-CardreaderdrivebayormSA TAsolid-statedrivebay

4Bay4-SecondarySATAharddiskdrivebay(forinstallinga3.5-inchSATAharddiskdriveora2.5-inchSATA

solid-statedrive)

5Bay5-PrimarySATAharddiskdrivebay(forinstallinga3.5-inchSATAharddiskdriveora2.5-inchSATA

solid-statedrive)

14ThinkCentreM78UserGuide

Machinetypeandmodellabel

Themachinetypeandmodellabelidentifiesyourcomputer.WhenyoucontactLenovoforhelp,themachine
typeandmodelinformationhelpssupporttechnicianstoidentifyyourcomputerandprovidefasterservice.

Thefollowingisasampleofthemachinetypeandmodellabel.

Figure6.Machinetypeandmodellabel

Chapter1.Productoverview15

16ThinkCentreM78UserGuide

Chapter2.Usingyourcomputer

Thischapterprovidesinformationonusingsomeofthecomputercomponents.

Frequentlyaskedquestions

Thefollowingareafewtipsthatwillhelpyouoptimizetheuseofyourcomputer.

CanIgetmyuserguideinanotherlanguage?

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

Wherearemyrecoverydiscs?

Lenovoprovidesaprogramthatenablesyoutocreaterecoverydiscs.Fordetailsaboutcreatingrecovery
discs,see“Creatingrecoverymedia”onpage90

Additionally,incaseofaharddiskfailure,youcanorderProductRecoverydiscsfromtheLenovoCustomer
SupportCenter.ForinformationaboutcontactingtheCustomerSupportCenter,seeChapter11“Getting
information,help,andservice”onpage127.BeforeusingtheProductRecoverydiscs,refertothe
documentationthatcomeswiththediscs.

Attention:AProductRecoverydiscpackagemightcontainmultiplediscs.Ensurethatyouhaveallofthe
discsreadybeforestartingtherecoveryprocess.Duringtherecoveryprocess,youmightbeprompted
tochangediscs.

.

WherecanIfindhelpabouttheWindowsoperatingsystem?

TheWindowsHelpandSupportinformationsystemprovidesyouwithdetailedinformationaboutusingthe
Windowsoperatingsystemtohelpyougetthemostofyourcomputer.ToaccesstheWindowsHelpand
Supportinformationsystem,dooneofthefollowing:

•OntheWindows7operatingsystem,clickStart➙HelpandSupport.

•OntheWindows8orWindows8.1operatingsystem,moveyourpointertothetop-rightorbottom-right
cornerofthescreentodisplaythecharms.ThenclickSettings➙Help.Additionally,theWindows8.1
operatingsystemprovidesaHelp+TipsapplicationthatyoucanopenfromtheStartscreenorApps
screen.

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.

©CopyrightLenovo2012,2014

17

NavigatingamongscreensontheWindows8andWindows8.1operating systems

Thissectionprovidesinstructionsonhowtonavigateamongthedesktop,theStartscreen,andapplications
thatwereopenedfromtheStartscreenontheWindows8andWindows8.1operatingsystems.Fordetailed
instructions,see“NavigatingonWindows8”onpage18

or“NavigatingonWindows8.1”onpage19.

NavigatingonWindows8

Tonavigateamongthedesktop,theStartscreen,andapplicationsthatwereopenedfromtheStartscreen
ontheWindows8operatingsystem,dooneofthefollowing:

•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

18ThinkCentreM78UserGuide

1.Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspaces
aredisplayedalongtheleftedgeofthescreen.

2.T apthedesiredworkspace.

•Method2

1.Swipeinfromtheleftedgeofthescreentonavigatetothenextavailableworkspace.

2.Repeatstep1untilyounavigatetothedesiredworkspace.

–Tonavigatetothemostrecentlyaccessedworkspace(application,PCsettings,ordesktop),doone

ofthefollowing:

–Usingapointingdevice:Movethepointertotheextremetop-leftcornerofthescreenuntilasmall

representationoftheworkspaceisdisplayed;thenclicktherepresentation.

–Usingatouchscreen:Swipeinfromtheleftedgeofthescreen.

ForinformationaboutusingotherfeaturesoftheWindows8operatingsystem,refertotheWindowsHelp
andSupportinformationsystem.Formoreinformation,see“HelpandSupport”onpage127

.

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-controlicon
inthebackgroundofthesystem.

•FromthedesktoporanyotherworkspacethatisopenedfromtheStartscreen,dooneofthefollowingto
navigatetotheStartscreen:

–Usingapointingdevice:

–Fromthedesktop,clicktheWindowsscreen-controliconinthebottom-leftcornerofthescreen.
–Fromanyotherworkspace,movethepointertotheextremebottom-leftcornerofthescreenuntil

theWindowsscreen-controliconisdisplayed;thenclicktheicon.

–Usingatouchscreen:Dooneofthefollowing:

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

•Swipeinandoutontheleftedgeofthescreen.Representationsofallavailableworkspaces
aredisplayedalongtheleftedgeofthescreen.TaptheWindowsscreen-controliconat

thebottom.

•Swipeinfromtherightedgeofthescreentodisplaythecharms;thentapStart.

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

isdisplayed;thenclicktheicon.

isdisplayedonlyifyouhaveatleastoneactiveworkspace

–Tonavigatetoapreviouslyaccessedworkspace(application,setting,ordesktop),dooneofthe

following:

Chapter2.Usingyourcomputer19

–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-leftcornerofthescreenuntilthe

Windowsscreen-controliconisdisplayed;thenclicktheicon.

–Usingatouchscreen:Swipeinfromtheleftedgeofthescreen.

ForinformationaboutusingotherfeaturesoftheWindows8.1operatingsystem,opentheHelp+Tips
applicationfromtheStartscreenorAppsscreen,orrefertotheWindowsHelpandSupportinformation
system.Formoreinformation,see“HelpandSupport”onpage127.

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.

20ThinkCentreM78UserGuide

–ForWindows8.1:

1.Clickthearrowiconinthebottom-leftcornerofthescreentogototheAppsscreen.

2.Scrolltotherightside,andclickControlPanelintheWindowsSystemsection.

Usingthekeyboard

Dependingonyourmodel,yourcomputercomeswitheitherastandardkeyboardorafingerprintreader
keyboard.TheMicrosoftWindowsshortcutkeysareprovidedonbothkeyboardtypes.

Thissectionprovidesinformationaboutthefollowingtopics:

•“UsingWindowsshortcutkeys”onpage21

•“Usingafingerprintreader”onpage21

UsingWindowsshortcutkeys

Boththestandardkeyboardandthefingerprintreaderkeyboardprovidethreekeysyoucanusewithyour
MicrosoftWindowsoperatingsystem.

•ThetwoWindowslogokeysarelocatedbesidetheAltkeyoneithersideofthespacebar.Theyfeature
theWindowslogo.OntheWindows7operatingsystem,presstheWindowskeytoopentheStart
menu.OntheWindows8orWindows8.1operatingsystem,presstheWindowskey

betweenthecurrentworkspaceandtheStartscreen.ThestyleoftheWindowslogovariesdepending
onthekeyboardtype.

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

toswitch

Note:YoucanusethemouseortheUpandDownarrowkeystohighlightmenuselections.OntheWindows
7operatingsystem,youcanclosetheStartmenuorthecontextmenubyclickingthemouseorpressingEsc.

Usingafingerprintreader

Somecomputersmightcomewithakeyboardthathasafingerprintreader.Formoreinformationaboutthe
fingerprintreader,see“AnintroductiontoLenovoprograms”onpage7.

ToopenFingerprintManagerProorThinkVantageFingerprintSoftwareandusethefingerprintreader,see
“Lenovoprograms”onpage5.

Followtheon-screeninstructions.Foradditionalinformation,refertothehelpsystemofFingerprintManager
ProorThinkVantageFingerprintSoftware.

Chapter2.Usingyourcomputer21

Usingthewheelmouse

Thewheelmousehasthefollowingcontrols:

1PrimarymousebuttonUsethisbuttontoselectorstartaprogramormenuitem.

2Wheel

3Secondarymousebutton

Youcanswitchthefunctionoftheprimaryandsecondarymousebuttonsandchangeotherdefaultbehavior
throughthemousepropertiesfunctionintheWindowsControlPanel.

Usethewheeltocontrolthescrollingactionofthemouse.Thedirectioninwhichyou
rotatethewheelcontrolsthedirectionofthescrollingaction.

Usethisbuttontodisplayamenufortheactiveprogram,icon,orobject.

Adjustingaudio

Soundisanimportantpartofthecomputerexperience.Y ourcomputerhasadigitalaudiocontrollerbuilt
intothesystemboard.Somemodelsalsohaveahigh-performanceaudioadapterinstalledinoneofthePCI
cardslots.

Aboutyourcomputeraudio

Ifafactory-installed,high-performanceaudioadapterisinstalledinyourcomputer,thesystem-board
audioconnectorsontherearofthecomputeraretypicallydisabled;usetheconnectorsprovidedonthe
audioadapter.

Eachaudiosolutionprovidesatleastthreeaudioconnectors:audioline-inconnector,audioline-out
connector,andMicrophoneconnector.Onsomemodels,afourthconnectorisprovidedfortheattachment
ofunpoweredstereospeakers(speakersthatdonotrequireanacpowersource).Theaudioadapter
providesyouwiththeabilitytorecordandplaybacksoundandmusic,aswellastoenjoysoundwith
multimediaapplicationsandworkwithspeech-recognitionsoftware.

Optionally,youcanconnectasetofpoweredstereospeakerstotheaudioline-outconnectortoenjoy
bettersoundwithmultimediaapplications.

Settingthevolumefromthedesktop

Thedesktopvolumecontrolisaccessiblethroughthevolumeiconinthetaskbar,whichislocatedatthe
bottom-rightcorneroftheWindowsdesktop.Clickthevolumeiconandmovethesliderupordownto
controlthevolume,orclicktheMuteicontoturntheaudiooff.Ifthevolumeiconisnotinthetaskbar,see
“Addingthevolumeicontothetaskbar”onpage22.

Addingthevolumeicontothetaskbar

ToaddthevolumeicontothetaskbarontheWindows7operatingsystem,dothefollowing:

22ThinkCentreM78UserGuide

1.FromtheWindowsdesktop,clickStart➙ControlPanel➙AppearanceandPersonalization.

2.IntheTaskbarandStartMenusection,clickCustomizeiconsonthetaskbar.

3.ClickTurnsystemiconsonoroffandchangethevolumebehaviorsfromOfftoOn.

4.ClickOKtosavethenewsettings.

ToaddthevolumeicontothetaskbarontheWindows8orWindows8.1operatingsystem,dothefollowing:

1.OpenControlPanel,andclickAppearanceandPersonalization.

Note:FordetailedinformationonhowtoopenControlPanelonWindows8andWindows8.1,see
“AccessingControlPanelontheWindows8orWindows8.1operatingsystem”onpage20.

2.Dooneofthefollowing:

•ForWindows8:
IntheT askbarsection,clickCustomizeiconsonthetaskbar.

•ForWindows8.1:
IntheT askbarandNavigationsection,clickCustomizeiconsonthetaskbar.

3.ClickTurnsystemiconsonoroffandchangethevolumebehaviorfromOfftoOn.

4.ClickOKtosavethenewsettings.

SettingthevolumefromControlPanel

YoucansetthecomputervolumefromControlPanel.TosetthecomputervolumefromControlPanel,
dothefollowing:

1.OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound.Onthe
Windows8orWindows8.1operatingsystem,openControlPanel,andclickHardwareandSound.

Note:FordetailedinformationonhowtoopenControlPanelonWindows8andWindows8.1,see
“AccessingControlPanelontheWindows8orWindows8.1operatingsystem”onpage20

2.IntheSoundsection,clickAdjustsystemvolume.

3.Movetheslidersupordowntoraiseorlowerthevolumeofyourcomputer.

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

.

Chapter2.Usingyourcomputer23

•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.

PlayingaCDorDVD

IfyourcomputercomeswithaDVDdrive,youcanlistentoaudioCDsorwatchDVDmovies.Toplaya
CDorDVD,dothefollowing:

1.PresstheEject/LoadbuttonontheDVDdrivetoopenthetray.

2.Withthetrayfullyextended,inserttheCDorDVDintothetray.SomeDVDdriveshaveasnaphubinthe
centerofthetray.Ifyourdrivehasasnaphub,supportthetraywithonehandandthenpushonthe
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-ejectholelocatedonthefrontoftheDVDdrive.Besurethedriveispowered
offwhenusingtheemergencyeject.UsetheEject/Loadbuttoninsteadoftheemergencyejectexcept
inanemergency.

RecordingaCDorDVD

IfyourcomputercomeswitharecordableDVDdrive,youcanusethedrivetorecordCDsorDVDs.

TorecordaCDorDVD,dooneofthefollowing:

•OntheWindows7operatingsystem,youhaveeithertheCorelDVDMovieFactoryLenovoEditionprogram
orthePower2Goprograminstalledonyourcomputer.

–ToruntheCorelDVDMovieFactoryLenovoEditionprogram,clickStart➙AllPrograms➙Corel

DVDMovieFactoryLenovoEdition➙CorelDVDMovieFactoryLenovoEdition.Followthe
instructionsonthescreen.

24ThinkCentreM78UserGuide

–TorunthePower2Goprogram,clickStart➙AllPrograms➙PowerDVDCreate➙Power2Go.

Followtheinstructionsonthescreen.

•OntheWindows8operatingsystem,runthePower2Goprogrambydoingthefollowing:

1.Movethepointertothetop-rightorbottom-rightcornerofthescreentodisplaythecharms.Then
clickSearchandtypePower2Go.

2.ClickPower2Gointheleftpaneltoopentheprogram.

3.Followtheinstructionsonthescreen.

•OntheWindows8.1operatingsystem,runthePower2Goprogrambydoingthefollowing:

1.Onthestartscreen,clickthearrowiconinthebottom-leftcornertogototheAppsscreen.Then
typePower2Gointhesearchboxinthetop-rightcornerofthescreen.

2.ClickPower2Gointhesearchresulttoopentheprogram.

3.Followtheinstructionsonthescreen.

YoualsocanuseWindowsMedia
andSupport”onpage127.

®

PlayertorecordCDsanddataDVDs.Formoreinformation,see“Help

Chapter2.Usingyourcomputer25

26ThinkCentreM78UserGuide

Chapter3.Youandyourcomputer

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.

©CopyrightLenovo2012,2014

27

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,ensurethattheventedairisnotblowingonpeople.

Electricaloutletsandcablelengths

Thelocationofelectricaloutlets,thelengthofpowercordsandcablesthatconnecttothemonitor,printer,
andotherdevicesmightdeterminethefinalplacementofyourcomputer.

Whenarrangingyourworkspace:

•Avoidtheuseofextensioncords.Whenpossible,plugthecomputerpowercorddirectlyintoanelectrical
outlet.

•Keeppowercordsandcablesneatlyroutedawayfromwalkwaysandotherareaswheretheymight
getkickedaccidentally.

Formoreinformationaboutpowercords,see“Powercordsandpoweradapters”onpagevi.

Accessibilityinformation

Lenovoiscommittedtoprovidingpeoplewithdisabilitiesgreateraccesstoinformationandtechnology.
Sometechnologiesarealreadyprovidedinyouroperatingsystem.Otherscanbepurchasedthrough
vendors.

UsersalsocanusetheEaseofAccessCenterprovidedintheWindowsoperatingsystemtoconfiguretheir
computerstosuittheirphysicalandcognitiveneeds.TheEaseofAccessCenterisacentrallocationthat
youcanusetoconfiguretheaccessibilitysettingsandprogramsavailableintheWindowsoperatingsystem.
TousetheEaseofAccessCenter,openControlPanelandclickEaseofAccess➙EaseofAccessCenter.

Thefollowinginformationprovideswaystohelpuserswhohavehearing,vision,andmobilitylimitationsget
themostoutoftheircomputerexperience.

On-screennotification

On-screennotificationhelpshearing-impairedpeoplebeawareofthestatusoftheircomputer.On-screen
notificationreplacessoundswithvisualcuesortextcaptionstoindicatethatactivityishappeningonthe
computer.Asaresult,systemalertsarenoticeableevenwhentheyarenotheard.Forexample,whenyou

28ThinkCentreM78UserGuide

selectoneobjectwithyourkeyboard,theobjectishighlighted.Whenyoumovethepointertooneobject
withyourmouse,theintroductorytextoftheobjectisdisplayed.

Touseon-screennotification,openControlPanel,clickEaseofAccess➙EaseofAccessCenter,and
thenclickUsetextorvisualalternativesforsounds.

Audionotification

Audionotificationhelpsvisuallyimpairedpeopleorpeoplewithweaksightbeawareofthestatusoftheir
computer.

Touseaudionotification,openControlPanel,clickEaseofAccess➙EaseofAccessCenter➙Usethe

computerwithoutadisplay,andthenselectTurnonAudioDescription.

Narrator

Narratorisascreenreaderthatreadswhatisdisplayedonthescreenaloudanddescribeseventslike
errormessages.

ToopenNarrator,dothefollowing:

•ForWindows7:ClicktheStartbutton.Then,typeNarratorintothesearchfield.Inthelistofresults,
clickNarrator.

•ForWindows8orWindows8.1:Moveyourpointertothetop-rightorbottom-rightcornerofthescreen
todisplaythecharmsandclickSearch.Then,typeNarratorintothesearchfield.Inthelistofresults,
clickNarrator.

FormoreinformationabouthowtouseandconfigureNarrator,seetheWindowsHelpandSupport
informationsystem.

Screen-readertechnologies

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

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

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

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

SpeechRecognition

SpeechRecognitionenablesyoutocontrolyourcomputerbyvoice.

Usingonlyyourvoice,youcanstartprograms,openmenus,clickbuttonsandotherobjectsonthescreen,
dictatetextintodocuments,andwriteandsende-mails.Everythingyoudowiththekeyboardandmouse
canbedonewithonlyyourvoice.

ToopenSpeechRecognition,dothefollowing:

•ForWindows7:ClicktheStartbutton.Then,typeSpeechRecognitionintothesearchfield.Inthelist
ofresults,clickSpeechRecognition.

•ForWindows8orWindows8.1:Moveyourpointertothetop-rightorbottom-rightcornerofthescreen
todisplaythecharmsandclickSearch.Then,typeSpeechRecognitionintothesearchfield.Inthelist
ofresults,clickSpeechRecognition.

Chapter3.Youandyourcomputer29

FormoreinformationabouthowtouseandconfigureSpeechRecognition,seetheWindowsHelpand
Supportinformationsystem.

Customizabletextsize

Dependingonyourpreference,youcanchangeonlythetextsizeinsteadofchangingthesizeofeverything
onthedesktop.Tochangethetextsize,openControlPanelandclickAppearancesandPersonalization➙

Display.Then,gotoChangeonlythetextsizeandsetatextsizethatmeetsyourneeds.

Magnifier

YourcomputerisequippedwiththeMicrosoftMagnifiertohelpvisuallyimpairedpeopleusethecomputer
morecomfortably.Magnifierisausefulutilitythatenlargestheentirescreenorpartofthescreensothatyou
canseethewordsandimagesbetter.YoucanopenMagnifierfromtheEaseofAccessCenter.

ToopenMagnifier,dothefollowing:

•ForWindows7:ClicktheStartbutton,clickAllPrograms➙Accessories➙EaseofAccess,and
thenclickMagnifier.

•ForWindows8orWindows8.1:Moveyourpointertothetop-rightorbottom-rightcornerofthescreen
todisplaythecharmsandclickSearch.Then,typeMagnierintothesearchfield.Inthelistofresults,
clickMagnifier.

FormoreinformationabouthowtouseandconfigureMagnifier,seetheWindowsHelpandSupport
informationsystem.

Note:Fortouch-screencomputermodels,youalsocanzoominandzoomoutbyusingtouchgestures
insteadofthekeyboard.See“Zoom”onpage30

.

Zoom

Youcanusethezoomfeaturetoenlargeorreducethesizeoftext,pictures,maps,orotherobjects.

•Fromthekeyboard:

–Zoomin:PresstheWindowslogokey+theplus-signkey(+)toenlargethesizeoftext,pictures,

maps,orotherobjects.

–Zoomout:PresstheWindowslogokey+theminus-sign(-)keytoreducethesizeoftext,pictures,

maps,orotherobjects.

•Fromthetouchscreen:

–Zoomin:Movetwofingersfartherapartonthetouchscreentoenlargethesizeoftext,pictures,

maps,orotherobjects.

–Zoomout:Movetwofingersclosertogetheronthetouchscreentoreducethesizeoftext,pictures,

maps,orotherobjects.

Screenresolution

Youcanmakeyourdocumentseasiertoreadbyadjustingthescreenresolutionofyourcomputer.Toadjust
thescreenresolution,rightclickanywhereonthedesktop,clickScreenresolution,andthenadjustthe
settingsasyouprefer.

Note:Settingtoolowofaresolutionmightpreventsomeitemsfromfittingonthescreen.

Foralternativesonincreasingthesizeoftextandotherobjects,seethefollowing:

•“Customizabletextsize”onpage30

•“Magnifier”onpage30

30ThinkCentreM78UserGuide

•“Zoom”onpage30

EaseofAccesskeyboardshortcuts

Thefollowingtablecontainskeyboardshortcutsthatcanhelpmakeyourcomputereasiertouse.

KeyboardshortcutFunction

Windowslogokey+U

RightShiftforeightseconds

ShiftfivetimesTurnStickyKeysonoroff

NumLockforfivesecondsTurnT oggleKeysonoroff

LeftAlt+LeftShift+NumLock

LeftAlt+LeftShift+PrtScn(orPrtSc)TurnHighContrastonoroff

OpentheEaseofAccessCenter

TurnFilterKeysonoroff

TurnMouseKeysonoroff

Formoreinformation,gotohttp://windows.microsoft.com/,andthentypeanyofthefollowingkeywords
forsearching:keyboardshortcuts,keycombinations,shortcutkeys.

On-ScreenKeyboard

Ifyouprefertotypeorenterdataintoyourcomputerwithoutusingaphysicalkeyboard,youcanuse
On-ScreenKeyboard.On-ScreenKeyboarddisplaysavisualkeyboardwithallthestandardkeys.Youcan
selectkeysusingthemouseoranotherpointingdevice,oryoucantaptoselectthekeysifyourcomputer
supportsmulti-touchscreen.

ToopenOn-ScreenKeyboard,dothefollowing:

•ForWindows7:ClicktheStartbutton.Then,typeOn-ScreenKeyboardintothesearchfield.Inthelistof
results,clickOn-ScreenKeyboard.

•ForWindows8orWindows8.1:Moveyourpointertothetop-rightorbottom-rightcornerofthescreento
displaythecharmsandclickSearch.Then,typeOn-ScreenKeyboardintothesearchfield.Inthelistof
results,clickOn-ScreenKeyboard.

FormoreinformationabouthowtouseandconfigureOn-ScreenKeyboard,seetheWindowsHelpand
Supportinformationsystem.

Personalizedkeyboard

Thetactilebumpsonthekeyboardprovideareferencepointfromwhichyoucaneasilylocateallkeyson
thekeyboardwithoutvisualassistance.

Toadjustyourkeyboardsettings,openControlPanel,clickEaseofAccess➙EaseofAccessCenter,
andthenclickMakethekeyboardeasiertouse.

Industry-standardconnectors

Yourcomputerprovidesindustry-standardconnectorsthatenableyoutoconnectassistivedevices,
ifneeded.

Formoreinformationaboutthelocationandfunctionoftheconnectors,see“Locatingconnectors,controls,
andindicatorsonthefrontofyourcomputer”onpage9

and“Locatingconnectorsontherearofyour

computer”onpage10.

Chapter3.Youandyourcomputer31

TTY/TDDconversionmodem

Yourcomputersupportstheuseofthetexttelephone(TTY)orthetelecommunicationsdeviceforthe
deaf(TDD)conversionmodem.ThemodemmustbeconnectedbetweenyourcomputerandaTTY/TDD
telephone.Then,youcantypeamessageonyourcomputerandsendittothetelephone.

Documentationinaccessibleformats

Lenovoprovideselectronicdocumentationinaccessibleformats.Lenovoelectronicdocumentation,suchas
properlytaggedPDFfilesorHyperTextMarkupLanguage(HTML)files,isdevelopedtoensurethatvisually
impaireduserscanreadthedocumentationthroughascreenreader.Eachimageinthedocumentationalso
includesadequatealternativetexttoexplaintheimagesothatvisuallyimpaireduserscanunderstandthe
imagewhentheyuseascreenreader.

Registeringyourcomputer

Whenyouregisteryourcomputer,informationisenteredintoadatabase,whichenablesLenovotocontact
youincaseofarecallorothersevereproblem.AfteryouregisteryourcomputerwithLenovo,youwillreceive
quickerservicewhenyoucallLenovoforhelp.Inaddition,somelocationsofferextendedprivilegesand
servicestoregisteredusers.

ToregisteryourcomputerwithLenovo,dooneofthefollowing:

•Gotohttp://www.lenovo.com/registerandfollowtheinstructionsonthescreentoregisteryourcomputer.

•ConnectyourcomputertotheInternetandregisteryourcomputerthroughapreinstalledregistration
program:

–ForWindows7:ThepreinstalledLenovoProductRegistrationprogramlaunchesautomaticallyafteryou

haveusedyourcomputerforatime.Followtheinstructionsonthescreentoregisteryourcomputer.

–ForWindows8orWindows8.1:OpentheLenovoSupportprogram.ThenclickRegistrationand

followtheinstructionsonthescreentoregisteryourcomputer.

Movingyourcomputertoanothercountryorregion

Whenyoumoveyourcomputertoanothercountryorregion,youmusttakelocalelectricalstandards
intoconsideration.

Ifyourelocateyourcomputertoacountryorregionthatusesanelectricaloutletstyledifferentfromthe
typeyouarecurrentlyusing,youwillhavetopurchaseeitherelectricalplugadaptersornewpowercords.
YoucanorderpowercordsdirectlyfromLenovo.

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

32ThinkCentreM78UserGuide

Chapter4.Security

Thischapterprovidesinformationabouthowtoprotectyourcomputerfromtheftandunauthorizeduse.

Securityfeatures

Thefollowingsecurityfeaturesareavailableonyourcomputer:

•ComputraceAgentsoftwareembeddedinfirmware
TheComputraceAgentsoftwareisanITassetmanagementandcomputertheftrecoverysolution.

Thesoftwaredetectsifchangeshavebeenmadeonthecomputer,suchashardware,software,or
thecomputercall-inlocation.

Note:YoumighthavetopurchaseasubscriptiontoactivatetheComputraceAgentsoftware.

•Coverpresenceswitch(alsocalledintrusionswitch)
Thecoverpresenceswitchpreventsyourcomputerfromloggingintotheoperatingsystemwhenthe

computercoverisnotproperlyinstalledorclosed.Toenablethecoverpresenceswitchconnector
onthesystemboard,tothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage97.

2.SettheAdministratorPassword.See“Setting,changing,anddeletingapassword”onpage98.

3.FromtheSecuritysubmenu,selectChassisIntrusionDetection➙Enabled.Thecoverpresence
switchconnectoronthesystemboardisenabled.

Whenthecoverpresenceswitchdetectsthatyourcomputercoverisnotproperlyinstalledorclosed
whenyouturnonthecomputer,anerrormessagewillbedisplayed.Tobypasstheerrormessageand
logintotheoperatingsystem,dothefollowing:

1.Properlyinstallorcloseyourcomputercover.See“Completingthepartsreplacement”onpage86.

2.PressF1toentertheSetupUtilityprogram.ThenpressF10tosaveandexittheSetupUtility
program.Theerrormessagewillnotbedisplayedagain.

•AbilitytoenableanddisabledevicesandUSBconnectors
Formoreinformation,see“Enablingordisablingadevice”onpage99.

•Integratedfingerprintreader(availableonsomemodels)
Dependingonthemodelsofyourcomputer,thekeyboardmayhaveanintegratedfingerprintreader.

ByenrollingyourfingerprintandassociatingitwithaPower-onPassword,aHardDiskPassword,or
bothpasswordsbeforehand,youcanstartthecomputer,logontothesystem,andentertheSetup
Utilityprogrambyswipingyourfingeroverthereader,withouttypingapassword.Thusfingerprint
authenticationcanreplacepasswordsandenablesimpleandsecureuseraccess.

•Startupsequencecontrol
Formoreinformation,see“Selectingorchangingthestartupdevicesequence”onpage100

•Startupwithoutkeyboardormouse
Yourcomputerisabletologintotheoperatingsystemwithoutkeyboardormouseconnected.

•TrustedPlatformModule(TPM)
TrustedPlatformModuleisasecurecryptoprocessorthatcanstorecryptographickeysthatprotect

informationstoredinyourcomputer.

.

©CopyrightLenovo2012,2014

33

Lockingthecomputercover

Lockingthecomputercoverhelpspreventunauthorizedpeoplefromgainingaccesstotheinsideofyour
computer.Yourcomputercomeswithapadlockloopsothatthecomputercovercannotberemoved
whenapadlockisinstalled.

Figure7.Installingapadlock

34ThinkCentreM78UserGuide

Attachingacablelock

Acablelockcanbeusedtosecuredevices,suchasthekeyboardandthemouse,bylockingthedevice
cablestoyourcomputer.Thecablelockattachestothecable-lockslotsontherearofyourcomputer.See
“Locatingconnectorsontherearofyourcomputer”onpage10.

Toinstallacablelock,dothefollowing:

1.Inserttheclip1intothecable-lockslot4.

2.Pullthecablesyouwanttolockthroughthedentsinthecablelock.

3.Presstheclip2intothecable-lockslot3untilitsnapsintoposition.

Figure8.Installingacablelock

Chapter4.Security35

AttachingaKensington-stylecablelock

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

Figure9.Kensington-stylecablelock

Usingpasswords

YoucansetavarietyofpasswordsthroughtheMicrosoftWindowsoperatingsystemandthroughtheBIOS
ofyourcomputertohelpdeterunauthorizeduseofyourcomputer.

BIOSpasswords

YoucanusetheBIOSSetupUtilityprogramtosetpasswordstopreventunauthorizedaccesstoyour
computeranddata.Thefollowingtypesofpasswordsareavailable:

•Power-OnPassword:WhenaPower-OnPasswordisset,youarepromptedtotypeavalidpassword
eachtimethecomputeristurnedon.Thecomputercannotbeuseduntilthevalidpasswordistyped
in.Formoreinformation,see“Power-OnPassword”onpage98

•HardDiskPassword:SettingaHardDiskPasswordpreventsunauthorizedaccesstothedataonthehard
diskdrive.WhenaHardDiskPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyou
trytoaccesstheharddiskdrive.Formoreinformation,see“HardDiskPassword”onpage98.

36ThinkCentreM78UserGuide

.

•AdministratorPassword:SettinganAdministratorPassworddetersunauthorizedusersfromchanging
configurationsettings.Ifyouareresponsibleformaintainingtheconfigurationsettingsofseveral
computers,youmightwanttosetanAdministratorPassword.Formoreinformation,see“Administrator
Password”onpage98

Youdonothavetosetanypasswordstouseyourcomputer.However,usingpasswordsimproves
computingsecurity.

.

Windowspasswords

DependingonyourversionoftheWindowsoperatingsystem,youcanusepasswordsforavarietyof
features,includingcontrollingloginaccess,accesstosharedresources,networkaccess,andindividualuser
settings.Formoreinformation,see“HelpandSupport”onpage127.

Configuringthefingerprintreader

Ifyourkeyboardhasafingerprintreader,youcanconfigurethefingerprintreaderintheSetupUtilityprogram.

TheFingerprintSetupsubmenuundertheSecuritymenuoftheSetupUtilityprogramprovidesthe
followingoptions:

•PrebootAuthentication:enablesordisablesthefingerprintauthenticationforaccessingtheBIOS.

•EraseFingerprintData:clearsthefingerprintdatastoredinafingerprintreader.

Toconfigurethefingerprintreader,dothefollowing:

1.StarttheSetupUtilityprogram.See“StartingtheSetupUtilityprogram”onpage97.

2.FromtheSetupUtilityprogrammainmenu,selectSecurity➙FingerprintSetup,andpressEnter.
TheFingerprintSetupwindowopens.

3.SelectPrebootAuthenticationorEraseFingerprintDataasdesired,andpressEnter.

4.SelectthedesiredsettingsandpressEnter.

5.PressF10tosavechangesandexittheSetupUtilityprogram.PressEnterwhenpromptedtoconfirm
theexit.

Usingandunderstandingfirewalls

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

TheWindowsoperatingsystempreinstalledonyourcomputerprovidestheWindowsFirewall.Fordetailson
usingtheWindowsFirewall,referto“HelpandSupport”onpage127.

Protectingdataagainstviruses

Yourcomputerispreinstalledwithanantivirusprogramtohelpyouguardagainst,detect,andeliminate
viruses.

Lenovoprovidesafullversionofantivirussoftwareonyourcomputerwithafree30-daysubscription.After
30days,youmustrenewthelicensetocontinuereceivingtheantivirussoftwareupdates.

Note:Virusdefinitionfilesmustbekeptup-to-datetoguardagainstnewviruses.

Chapter4.Security37

Formoreinformationabouthowtouseyourantivirussoftware,refertothehelpsystemofyourantivirus
software.

38ThinkCentreM78UserGuide

Chapter5.Installingorreplacinghardware

Thischapterprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.

Handlingstatic-sensitivedevices

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

Whenyouhandlepartsandothercomputercomponents,taketheseprecautionstoavoidstatic-electricity
damage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayshandlepartsandothercomputercomponentscarefully.HandlePCIcards,memorymodules,
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

©CopyrightLenovo2012,2014

39

Removingthecomputercover

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoremovethecomputercover.

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”onpage34and“AttachingaKensington-stylecable
lock”onpage36.

5.Removeanyscrewsthatsecurethecomputercover.

40ThinkCentreM78UserGuide

6.Pressthecover-releasebuttononthesideofthecomputerandslidethecovertotherearofthe
computertoremovethecover.

Figure10.Removingthecomputercover

Removingandreinstallingthefrontbezel

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoremoveandreinstallthefrontbezel.

Toremoveandreinstallthefrontbezel,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

Chapter5.Installingorreplacinghardware41

3.Removethefrontbezelbyreleasingthethreeplastictabsontheleftsideandpivotingthefrontbezel
outward.

Figure11.Removingthefrontbezel

4.T oreinstallthefrontbezel,alignthethreeplastictabsontherightsideofthefrontbezelwiththe
correspondingholesinthechassis,thenpivotthefrontbezelinwardsuntilitsnapsintopositionon
theleftside.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86

.

InstallingorreplacingaPCIcard

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

ThissectionprovidesinstructionsonhowtoinstallorreplaceaPCIcard.Yourcomputerhastwostandard
PCIcardslots,onePCIExpressx1cardslot,andonePCIExpressx16graphicscardslot.

ToinstallorreplaceaPCIcard,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

42ThinkCentreM78UserGuide

3.Attherearofthecomputer,pressthereleasebutton1toopenthecardlatch2.

Figure12.OpeningthePCIcardlatch

4.DependingonwhetheryouareinstallingorreplacingaPCIcard,dooneofthefollowing:

•IfyouareinstallingaPCIcard,removetheappropriatemetalslotcover.

•IfyouarereplacinganoldPCIcard,grasptheoldcardthatiscurrentlyinstalledandgentlypullit
outoftheslot.

Chapter5.Installingorreplacinghardware43

Figure13.RemovingaPCIcard

Notes:

a.Thecardfitstightlyintothecardslot.Ifnecessary,alternatemovingeachsideofthecardasmall

amountuntilitisremovedfromthecardslot.

b.Ifthecardisheldinplacebyaretaininglatch,pressthecardretaininglatch1asshownto

disengagethelatch.Graspthecardandgentlypullitoutoftheslot.

5.RemovethenewPCIcardfromitsstatic-protectivepackage.

6.Installthenewcardintotheappropriateslotonthesystemboard.See“Locatingpartsonthesystem
board”onpage13

.

Note:IfyouareinstallingaPCIExpressx16graphicscard,ensurethatthememoryslotretainingclips
areclosedbeforeyouinstallthegraphicscard.

44ThinkCentreM78UserGuide

7.PivotthecardlatchtotheclosedpositiontosecurethePCIcard.

Figure14.InstallingaPCIcard

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Installingorreplacingamemorymodule

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.

YourcomputerhasfourslotsforinstallingorreplacingDDR3UDIMMsthatprovideuptoamaximumof
32GBsystemmemory.Wheninstallingorreplacingamemorymodule,use2GB,4GB,or8GBDDR3
UDIMMsinanycombinationuptoamaximumof32GB.

Thefollowingtableprovidesinformationaboutthememorymoduleinstallationrulesthatyoushould
considerwheninstallingorremovingamemorymodule.The“X”markindicatesthememoryslot(s)into
whichthememorymodule(s)shouldbeinstalledindifferentsituations.Thenumbers1,2,3,and4indicate
theinstallationsequence.Tolocatethememorymoduleslots,see“Locatingpartsonthesystemboard”
onpage13

.

Chapter5.Installingorreplacinghardware45

UDIMMDIMM1DIMM2DIMM3DIMM4

OneUDIMM

TwoUDIMMsX,1X,2

ThreeUDIMMsX,3X,1X,2

FourUDIMMsX,3X,1X,4X,2

X

Toinstallorreplaceamemorymodule,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage13.

5.Removeanypartsthatmightpreventyouraccesstothememoryslots.Dependingonyourcomputer
model,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccesstothememory
slots.See“InstallingorreplacingaPCIcard”onpage42.

6.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:

•Ifyouarereplacinganoldmemorymodule,opentheretainingclipsandgentlypullthememory

moduleoutofthememoryslot.

Figure15.Removingamemorymodule

46ThinkCentreM78UserGuide

•Ifyouareinstallingamemorymodule,opentheretainingclipsofthememoryslotintowhichyou
wanttoinstallthememorymodule.

Figure16.Openingtheretainingclips

7.Positionthenewmemorymoduleoverthememoryslot.Ensurethatthenotch1onthememory
modulealignscorrectlywiththeslotkey2onthesystemboard.Pushthememorymodulestraight
downintotheslotuntiltheretainingclipsclose.

Figure17.Installingamemorymodule

8.ReinstallthePCIExpressx16graphicscardifyouhaveremovedit.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Installingorreplacingtheopticaldrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoinstallorreplacetheopticaldrive.

Toinstallorreplaceanopticaldrive,dothefollowing:

Chapter5.Installingorreplacinghardware47

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Dependingonwhetheryouareinstallingorreplacinganopticaldrive,dooneofthefollowing:

•Ifyouareinstallingasecondaryopticaldrive,removetheplasticpanelinthefrontbezelforthe
drivebayyouwanttouse.Ifthereisametalstaticshieldinstalledinthedrivebay,removethe
metalstaticshield.

•Ifyouarereplacinganopticaldrive,disconnectthesignalcableandthepowercablefromtherear
oftheopticaldrive,pressthebluereleasebutton,andthenslidetheopticaldriveoutofthefront
ofthecomputer.

Figure18.Removingtheopticaldrive

5.Installtheopticaldriveretaineronthesideofthenewopticaldrive.

Figure19.Installingtheopticaldriveretainer

48ThinkCentreM78UserGuide

6.Slidethenewopticaldriveintothedrivebayfromthefrontofthecomputeruntiltheopticaldrive
snapsintoposition.

Figure20.Installingtheopticaldrive

7.Connectthesignalcableandthepowercabletothenewopticaldrive.

Figure21.Connectingtheopticaldrive

8.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Installingorreplacingthecardreader

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Chapter5.Installingorreplacinghardware49

Thissectionprovidesinstructionsonhowtoinstallorreplacethecardreader.

Note:Thecardreaderisonlyavailableinsomemodels.Fornewinstallation,see“Installingthecardreader”
onpage50.Forreplacement,see“Replacingthecardreader”onpage52.

Installingthecardreader

Toinstallthecardreader,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Locatethecardreaderdrivebay.See“Locatinginternaldrives”onpage14.

5.Pivotthecardreaderretainertotheleftandslideitoutofthechassis.

Figure22.Removingthecardreaderretainer

6.Installthecardreaderretaineronthesideofthenewcardreader.

Figure23.Installingthecardreaderretainer

50ThinkCentreM78UserGuide

7.Slidethecardreaderwithretainerintothecardreaderdrivebayuntilitsnapsintoposition.

Figure24.Installingthecardreader

8.ConnectthecardreadercabletoFrontUSBconnector2onthesystemboard.See“Locatingpartson
thesystemboard”onpage13.

9.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Note:Youmighthavetoremovethecardreadercover2fromthefrontbezel.Toremovethecardread
cover,pivotthetworetainingclips1thatsecurethecardreadercoveroutwardsandthencompletely
disengagethecardreadercoverfromthefrontbezel.

Figure25.Removingthecardreadercover

Chapter5.Installingorreplacinghardware51

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthecardreader

Toreplacethecardreader,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Locatethecardreader.See“Locatingcomponents”onpage12.

5.DisconnectthecardreadercablefromtheUSBconnectoronthesystemboard.See“Locatingpartson
thesystemboard”onpage13.

6.Presstheblueretainingcliptoremovethecardreaderoutofthechassis.

Figure26.Removingthecardreader

7.Installthecardreaderretaineronthesideofthenewcardreader.

Figure27.Installingthecardreaderretainer

52ThinkCentreM78UserGuide

8.Slidethenewcardreaderintothedrivebayuntilitsnapsintoposition.

Figure28.Installingthecardreader

9.ReconnectthecardreadercabletoFrontUSBconnector2onthesystemboard.See“Locatingparts
onthesystemboard”onpage13.

10.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

11.T ocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

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“Lithiumcoincellbatterynotice”intheSafety,Warranty,andSetupGuideforinformationabout
replacinganddisposingofthebattery.

Toreplacethebattery,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Locatethebattery.See“Locatingpartsonthesystemboard”onpage13.

Chapter5.Installingorreplacinghardware53

4.Removetheoldbattery.

Figure29.Removingtheoldbattery

5.Installanewbattery.

Figure30.Installinganewbattery

6.Reinstallthecomputercoverandconnectthecables.See“Completingthepartsreplacement”on
page86.

Note:Whenthecomputeristurnedonforthefirsttimeafterreplacingthebattery,anerrormessage
mightbedisplayed.Thisisnormalafterreplacingthebattery.

7.T urnonthecomputerandallattacheddevices.

8.UsetheSetupUtilityprogramtosetthedate,time,andanypasswords.SeeChapter7“UsingtheSetup
Utilityprogram”onpage97.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthepowersupplyassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethepowersupplyassembly.

Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafetyandproperUnderwritersLaboratories(UL)certification.

CAUTION:

54ThinkCentreM78UserGuide

Hazardousmovingparts.Keepfingersandotherbodypartsaway.

CAUTION:
Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel
attached.Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwith
oneoftheseparts,contactaservicetechnician.

Toreplacethepowersupplyassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Disconnectthepowersupplyassemblycablesfromthesystemboardandalldrives.See“Locating
partsonthesystemboard”onpage13.

4.Releasethepowersupplyassemblycablesfromthecableclipsandtiesinthechassis.

Chapter5.Installingorreplacinghardware55

5.Laythecomputeronitssideandremovethefourscrewsattherearofthechassisthatsecurethe
powersupplyassembly.

Figure31.Removingthescrewsforthepowersupplyassembly

6.Slidethepowersupplyassemblytothefrontofthecomputerandthenliftitoutofthechassis.

7.Ensurethatthenewpowersupplyassemblyisthecorrectreplacement.

8.Installthenewpowersupplyassemblyintothechassissothatthescrewholesinthepowersupply
assemblyalignwiththoseinthechassis.

9.Installandtightenthefourscrewstosecurethepowersupplyassembly.

Note:UseonlyscrewsprovidedbyLenovo.

10.Reconnectthepowersupplyassemblycablestothesystemboardandeachofthedrives.

11.Securethepowersupplyassemblycableswiththecableclipsandtiesinthechassis.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86

Replacingtheheatsinkandfanassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacetheheatsinkandfanassembly.

CAUTION:

.

Theheatsinkandfanassemblymightbeveryhot.Beforeyouopenthecomputercover,turnoffthe
computerandwaitseveralminutesuntilthecomputeriscool.

56ThinkCentreM78UserGuide

Toreplacetheheatsinkandfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatetheheatsinkandfanassembly.See“Locatingpartsonthesystemboard”onpage13.

5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage13

.

6.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:

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

Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.

Figure32.Removingtheheatsinkandfanassembly

7.Liftthefailingheatsinkandfanassemblyoffthesystemboard.

Notes:

a.Youmighthavetogentlytwisttheheatsinkandfanassemblytofreeitfromthemicroprocessor.
b.Donottouchthethermalgreasewhilehandlingtheheatsinkandfanassembly.

8.Positionthenewheatsinkandfanassemblyonthesystemboardsothatthefourscrewsarealigned
withtheholesonthesystemboard.

Note:Positionthenewheatsinkandfanassemblysothattheheatsinkandfanassemblycableis
towardthemicroprocessorfanconnectoronthesystemboard.

9.Followthefollowingsequencetoinstallthefourscrewstosecurethenewheatsinkandfanassembly.
Donotover-tightenthescrews.

Chapter5.Installingorreplacinghardware57

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

10.Connecttheheatsinkandfanassemblycabletothemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage13.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86

Replacingthemicroprocessor

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.

CAUTION:

Theheatsinkandmicroprocessormightbeveryhot.Beforeyouopenthecomputercover,turnoff
thecomputerandwaitseveralminutesuntilthecomputeriscool.

Toreplacethemicroprocessor,dothefollowing:

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Laythecomputeronitssideforeasieraccesstothesystemboard.

4.Locatethesystemboardanddisconnectallcablesconnectedtothesystemboard.See“Locating
partsonthesystemboard”onpage13.

5.Removetheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage56.

.

Note:Placetheheatsinkandfanassemblyonitssidesothatthethermalgreaseonthebottomofit
doesnotgetincontactwithanything.

58ThinkCentreM78UserGuide

6.Liftthesmallhandle1toreleasethemicroprocessor2securedonthesystemboard.

Figure33.Accessingthemicroprocessor

7.Liftthemicroprocessorstraightupandoutofthemicroprocessorsocket.

Figure34.Removingthemicroprocessor

Notes:

a.Yourmicroprocessorandsocketmightlookdifferentfromtheoneillustrated.
b.Notetheorientationofthemicroprocessorinthesocket.Youcanlookforthesmalltriangle1

ononecornerofthemicroprocessor.Thisisimportantwheninstallingthenewmicroprocessor
onthesystemboard.

Chapter5.Installingorreplacinghardware59

c.Touchonlytheedgesofthemicroprocessor.Donottouchthegoldcontactsonthebottom.
d.Donotdropanythingontothemicroprocessorsocketwhileitisexposed.Thesocketpinsmustbe

keptascleanaspossible.

8.Ensurethatthesmallhandleisintheraisedposition.

9.Removetheprotectivecoverthatprotectsthegoldcontactsofthenewmicroprocessor.

10.Holdthenewmicroprocessorbyitssidesandalignthesmalltriangleononecornerofthenew
microprocessorwiththecorrespondingsmalltriangleononecornerofthemicroprocessorsocket.

11.Lowerthenewmicroprocessorstraightdownintothemicroprocessorsocketonthesystemboard.

12.Lowerthesmallhandletosecurethenewmicroprocessorinthesocket.

13.Reinstalltheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage56.

14.Reconnectallcablesthatweredisconnectedfromthesystemboard.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage86.

Replacingtheprimaryharddiskdrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacetheprimaryharddiskdrive.

Note:Dependingonyourmodeltype,yourcomputermightcomewitha2.5-inchsolid-statedrive.Toinstall
thesolid-statedrive,see“Installingthesolid-statedrive”onpage64.

Toreplacetheprimaryharddiskdrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Locatetheprimaryharddiskdrive.See“Locatinginternaldrives”onpage14.

4.Disconnectthesignalcableandthepowercablefromtheharddiskdrive.

5.Pullthebluehandletoreleaseandremovetheharddiskdrivefromthedrivecage.

60ThinkCentreM78UserGuide

Figure35.Removingtheprimaryharddiskdrive

6.Flexthesidesofthebluebrackettoremovetheharddiskdrivefromthebracket.

7.T oinstallanewharddiskdriveintothebluebracket,flexthebracketandalignpin1,pin2,pin3,
andpin4onthebracketwiththecorrespondingholesintheharddiskdrive.Donottouchthecircuit
board5onthebottomoftheharddiskdrive.

Figure36.Installingtheharddiskdriveintothebracket

Chapter5.Installingorreplacinghardware61

8.Slidethenewharddiskdriveintothedrivecageuntilitsnapsintoposition.

Figure37.Installingtheprimaryharddiskdrive

9.Connectthesignalcableandthepowercabletothenewharddiskdrive.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthesecondaryharddiskdrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Note:Yourcomputercomeswithasecondaryharddiskdrivebayforinstallingorreplacingasecondary

3.5-inchharddiskdriveora2.5-inchsolid-statedrive.T oinstallthesolid-statedrive,see“Installingthe
solid-statedrive”onpage64.

Thissectionprovidesinstructionsonhowtoreplacethesecondaryharddiskdrive.

Toreplacethesecondaryharddiskdrive,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Locatethesecondaryharddiskdrive.See“Locatinginternaldrives”onpage14.

4.Disconnectthesignalcableandthepowercablefromtheharddiskdrive.

62ThinkCentreM78UserGuide

5.Pullthebluehandletoreleaseandremovetheharddiskdrivefromtheharddiskdrivecage.

Figure38.Removingthesecondaryharddiskdrive

6.Flexthesidesofthebluebrackettoremovetheharddiskdrivefromthebracket.

7.T oinstallanewharddiskdriveintothebluebracket,flexthebracketandalignpin1,pin2,pin3,
andpin4onthebracketwiththecorrespondingholesintheharddiskdrive.Donottouchthecircuit
board5onthebottomoftheharddiskdrive.

Figure39.Installingtheharddiskdriveintothebracket

Chapter5.Installingorreplacinghardware63

8.Slidethenewharddiskdriveintotheharddiskdrivecageuntilitsnapsintoposition.

Figure40.Installingthesecondaryharddiskdrive

9.Connectthesignalcableandthepowercabletothenewharddiskdrive.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Installingthesolid-statedrive

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoinstallthe2.5-inchsolid-statedrive.

Toinstallthesolid-statedrive,dothefollowing:

64ThinkCentreM78UserGuide

1.Installthesolid-statedriveintothestorageconverter.Then,installthefourscrewstosecurethe
solid-statedrivetothestorageconverter.

Figure41.Installingthesolid-statedriveintothestorageconverter

2.T oinstallthesolid-statedrivewiththestorageconverterintothe3.5-inchharddiskdrivebracket,flex
thebracketandalignpin1,pin2,pin3,andpin4onthebracketwiththecorrespondingholesin
thestorageconverter.

Figure42.Installingthesolid-statedrivewiththestorageconverterintotheharddiskdrivebracket

3.Connectthesignalcableandthepowercabletothesolid-statedrive.

4.Installthesolid-statedriveintothedesiredharddiskdrivebay.See“Replacingtheprimaryharddisk
drive”onpage60or“Replacingthesecondaryharddiskdrive”onpage62.

Chapter5.Installingorreplacinghardware65

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthefrontfanassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethefrontfanassembly.

Note:Thefrontfanassemblyisonlyavailableinsomemodels.

Toreplacethefrontfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Disconnectthefrontfanassemblycablefromthepowerfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage13.

5.Thefrontfanassemblyisattachedtothechassisbyfourrubbermounts.Removethefrontfanassembly
bybreakingorcuttingtherubbermountsandgentlypullingthefrontfanassemblyoutofthechassis.

Note:Thenewfrontfanassemblywillhavefournewrubbermountsattached.

Figure43.Removingthefrontfanassembly

6.Installthenewfrontfanassemblybyaligningthenewrubbermountswiththecorrespondingholesin
thechassisandpushtherubbermountsthroughtheholes.

66ThinkCentreM78UserGuide

7.Pullthetipsoftherubbermountsuntilthefrontfanassemblyissecuredinplace.

Figure44.Installingthefrontfanassembly

8.Connectthefrontfanassemblycabletothepowerfanconnectoronthesystemboard.

9.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingtherearfanassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacetherearfanassembly.

Toreplacetherearfanassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Locatetherearfanassembly.See“Locatingcomponents”onpage12.

4.Disconnecttherearfanassemblycablefromthesystemfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage13

.

Chapter5.Installingorreplacinghardware67

5.Therearfanassemblyisattachedtothechassisbyfourrubbermounts.Removetherearfanassembly
bybreakingorcuttingtherubbermountsandgentlypullingtherearfanassemblyoutofthechassis.

Note:Thenewrearfanassemblywillhavefournewrubbermountsattached.

Figure45.Removingtherearfanassembly

6.Installthenewrearfanassemblybyaligningthenewrubbermountswiththecorrespondingholesinthe
chassisandpushtherubbermountsthroughtheholes.

68ThinkCentreM78UserGuide

7.Pullthetipsoftherubbermountsuntiltherearfanassemblyissecuredinplace.

Figure46.Installingtherearfanassembly

8.Connecttherearfanassemblycabletothesystemfanconnectoronthesystemboard.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

ReplacingthefrontaudioandUSBassembly

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

ThissectionprovidesinstructionsonhowtoreplacethefrontaudioandUSBassembly.

ToreplacethefrontaudioandUSBassembly,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.LocatethefrontaudioandUSBassembly.See“Locatingcomponents”onpage12.

Chapter5.Installingorreplacinghardware69

5.DisconnectthefrontaudioandUSBassemblycablesfromthesystemboard.See“Locatingpartson
thesystemboard”onpage13.

Note:Ensurethatyounotethelocationsofthecableswhenyoudisconnectthecablesfromthe
systemboard.

6.RemovethescrewthatsecuresthefrontaudioandUSBassemblybrackettothechassistoremove
thebracketfromthechassis.

Figure47.RemovingthescrewthatsecuresthefrontaudioandUSBassemblytothechassis

7.RemovethetwoscrewsthatsecurethefrontaudioandUSBassemblytoitsbracketandremovethe
failingfrontaudioandUSBassemblyfromthebracket.

8.InstallanewfrontaudioandUSBassemblyintothebracketandinstallthetwoscrewstosecurethe
frontaudioandUSBassemblytothebracket.

9.InstallthefrontaudioandUSBassemblybracketintothechassisandalignthescrewholeinthe
bracketwiththecorrespondingholeinthechassis.

10.Installthescrewtosecurethebrackettothechassis.

11.ReconnectthefrontaudioandUSBassemblycablestothefrontaudioconnectorandthefrontUSB
connectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage13.

12.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingtheinternalspeaker

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

70ThinkCentreM78UserGuide

Thissectionprovidesinstructionsonhowtoreplacetheinternalspeaker.

Note:Theinternalspeakerisonlyavailableonsomemodels.

Toreplacetheinternalspeaker,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Locatetheinternalspeakerconnectoronthesystemboard.See“Locatingpartsonthesystemboard”
onpage13.

4.Disconnecttheinternalspeakercablefromthesystemboard.

5.Pushthemetaltab1ontherightsideoftheinternalspeakerandslidetheinternalspeakertowardthe
righttocompletelyremoveitfromthechassis.

Figure48.Removingtheoldinternalspeaker

Chapter5.Installingorreplacinghardware71

6.Positionthenewinternalspeakerintothefourmetalclips1andpushtheinternalspeakertowardthe
leftuntilitissecuredinplace.

Figure49.Installinganewinternalspeaker

7.Connecttheinternalspeakercabletothesystemboard.See“Locatingpartsonthesystemboard”
onpage13.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86

Replacingthethermalsensor

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethethermalsensor.

Toreplacethethermalsensor,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Locatethethermalsensor.See“Locatingcomponents”onpage12.

5.Disconnectthethermalsensorcablefromthethermalsensorconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage13.

.

72ThinkCentreM78UserGuide

6.Frominsidethechassis,pivottheupperretainingclip1thatsecurestheplasticholderofthethermal
sensordownwardandthenpushtheclipoutwardtoreleasetheclip.Thendisengagetheplastic
holderholdingthethermalsensorfromthechassis.

Figure50.Removingthethermalsensor

7.Pulltheentirethermalsensoroutofthechassis.

Chapter5.Installingorreplacinghardware73

8.Inserttheconnectorandcableofthenewthermalsensorintothelowerhole1inthechassis.Then
alignthetwotabsontheplasticholderholdingthethermalsensorwiththetwoholes1and2inthe
chassis,andpushtheplasticholderuntilitsnapsintoposition.

Figure51.Installingthenewthermalsensor

9.Reconnectthethermalsensorcabletothesystemboard.See“Locatingpartsonthesystemboard”
onpage13.

10.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthecoverpresenceswitch

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethecoverpresenceswitch(intrusionswitch).

Toreplacethecoverpresenceswitch,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Locatethecoverpresenceswitch.See“Locatingcomponents”onpage12.

5.Disconnectthecoverpresenceswitchcablefromthecoverpresenceswitchconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage13.

74ThinkCentreM78UserGuide

6.Removethescrewthatsecuresthecoverpresenceswitchandremovethecoverpresenceswitch
fromthechassis.

Figure52.Removingthecoverpresenceswitch

Chapter5.Installingorreplacinghardware75

7.Positionthenewcoverpresenceswitchsothatthescrewholeinthecoverpresenceswitchisaligned
withthecorrespondingholeinthechassis.Theninstallthescrewtosecurethecoverpresence
switchtothechassis.

Figure53.Installingthenewcoverpresenceswitch

8.Reconnectthecoverpresenceswitchcabletothesystemboard.See“Locatingpartsonthesystem
board”onpage13.

9.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

ReplacingtheWiFiunits

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

ThissectionprovidesinstructionsonhowtoreplacetheWiFiunits.TheWiFiunitsincludeaWiFiadapter
card,aWiFicardmodule,andarearWiFiantennacable.

ReplacingtheWiFiunitsinvolvesthefollowingoperations:

•“RemovingtheWiFiadaptercard”onpage77

•“RemovingtheWiFicardmodule”onpage78

•“InstallingtheWiFiunits”onpage79

76ThinkCentreM78UserGuide

RemovingtheWiFiadaptercard

ToremoveaWiFiadaptercard,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Attherearofthecomputer,pressthereleasebutton1toopenthePCIcardlatch2.

Figure54.OpeningthePCIcardlatch

Chapter5.Installingorreplacinghardware77

4.GrasptheWiFiadaptercardthatiscurrentlyinstalledandgentlypullitoutoftheslot.

Figure55.RemovingtheWiFiadaptercard

Note:Thecardfitstightlyintothecardslot.Ifnecessary,alternatemovingeachsideofthecarda
smallamountuntilitisremovedfromthecardslot.

RemovingtheWiFicardmodule

ToremovetheWiFicardmodule,dothefollowing:

1.RemovetheWiFiadaptercardfromthecomputer,andthendisconnectthefrontandrearWiFiantenna
cablesfromtheWiFicardmodule.

Figure56.RemovingtheWiFiantennacables

78ThinkCentreM78UserGuide

2.RemovethetwoscrewsthatsecuretheWiFicardmoduletotheWiFiadaptercard.

Figure57.RemovingthescrewsthatsecuretheWiFicardmodule

3.PulltheWiFicardmoduleoutoftheminiPCIExpressslottoremoveitfromtheWiFiadaptercard.

Figure58.RemovingtheWiFicardmodule

InstallingtheWiFiunits

ToinstalltheWiFiunits,dothefollowing:

Chapter5.Installingorreplacinghardware79

1.InserttheWiFicardmoduleintotheminiPCIExpressslot,andtheninstallthetwoscrewstosecure
theWiFicardmoduletotheWiFiadaptercard.

Figure59.InstallingtheWiFicardmodule

80ThinkCentreM78UserGuide

2.ConnectthefrontantennacableandrearantennacabletotheWiFicardmodule.

Figure60.InstallingtheWiFiantennacables

3.InstalltheWiFiadaptercardintothePCIExpressx1slotonthesystemboard.See“Locatingpartson
thesystemboard”onpage13.

4.PivotthecardlatchtotheclosedpositiontosecuretheWiFiadaptercard.

Figure61.InstallingtheWiFiadaptercard

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Chapter5.Installingorreplacinghardware81

InstallingorremovingtherearWiFiantenna

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

ThissectionprovidesinstructionsonhowtoinstallorremovetherearWiFiantenna.

InstallingtherearWiFiantenna

ToinstalltherearWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.InstalltherearWiFiantennatotherearWiFiantennacableconnectorattachedontherearofthe
computer.

3.Adjusttheangleoftherearantennatolowertheriskofbreakingtheantennabyaccident.

Figure62.InstallingtherearWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

RemovingtherearWiFiantenna

ToremovetherearWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.StraightentherearWiFiantennasothatitcanbemoreeasilytwisted.

82ThinkCentreM78UserGuide

3.HoldthethickerendoftherearWiFiantennaandunscrewtheWiFiantennafromtherearofthe
computer.

Figure63.RemovingtherearWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

InstallingorremovingthefrontWiFiantenna

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

ThissectionprovidesinstructionsonhowtoinstallorremovethefrontWiFiantenna.

InstallingthefrontWiFiantenna

ToinstallthefrontWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.Peeloffthepaperthatprotectsthestickersonthefrontantenna.

Chapter5.Installingorreplacinghardware83

Figure64.Peelingoffthepaperthatprotectsthestickers

5.Stickthefrontantennatothefrontpanelasshown.Theninsertthefrontantennacablethroughthe
holeinthefrontpanel.

Figure65.InstallingthefrontWiFiantenna

6.ConnectthefrontantennacabletotheWiFicardmodule.

84ThinkCentreM78UserGuide

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

RemovingthefrontWiFiantenna

ToremovethefrontWiFiantenna,dothefollowing:

1.T urnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage40.

3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage41.

4.DisconnectthefrontantennacablefromtheWiFicardmodule.

5.Removethefrontantennaandcablefromthefrontofthecomputer.

Figure66.RemovingthefrontWiFiantenna

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Replacingthekeyboardormouse

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.

Thissectionprovidesinstructionsonhowtoreplacethekeyboardormouse.

Toreplacethekeyboardormouse,dothefollowing:

1.Removeanymediafromthedrives.Then,turnoffallattacheddevicesandthecomputer.

2.Disconnectallpowercordsfromelectricaloutlets.

Chapter5.Installingorreplacinghardware85

3.Disconnecttheoldkeyboardcableormousecablefromthecomputer.

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

Figure67.ConnectingtheUSBkeyboardormouse

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage86.

Completingthepartsreplacement

Aftercompletingtheinstallationorreplacementforallparts,youneedtoreinstallthecomputercoverand
reconnectcables.Dependingonthepartsyouinstalledorreplaced,youmightneedtoconfirmtheupdated
informationintheSetupUtilityprogram.RefertoChapter7“UsingtheSetupUtilityprogram”onpage97

.

Toreinstallthecomputercoverandreconnectcablestoyourcomputer,dothefollowing:

1.Ensurethatallcomponentshavebeenreassembledcorrectlyandthatnotoolsorloosescrewsareleft
insideyourcomputer.See“Locatingcomponents”onpage12forthelocationsofvariouscomponents
inyourcomputer.

2.Ifyouhaveremovedthefrontbezel,reinstallit.See“Removingandreinstallingthefrontbezel”on
page41.

3.Ensurethatthecablesareroutedcorrectlybeforereinstallingthecomputercover.Keepcablesclearof
thehingesandsidesofthecomputerchassistoavoidinterferencewithreinstallingthecomputercover.

86ThinkCentreM78UserGuide

4.Positionthecomputercoveronthechassissothattherailguidesonthebottomofthecomputer
coverengagetherailsonthechassis.Then,pushthecovertothefrontofthecomputeruntilitsnaps
intoposition.

Figure68.Reinstallingthecomputercover

5.Installthescrewstosecurethecomputercover.

6.Ifthereisapadlockavailable,lockthecomputercover.See“Lockingthecomputercover”onpage34.

7.IfthereisaKensington-stylecablelockavailable,lockthecomputer.See“AttachingaKensington-style
cablelock”onpage36.

8.Reconnecttheexternalcablesandpowercordstothecomputer.See“Locatingconnectorsonthe
rearofyourcomputer”onpage10.

9.T oupdateyourconfiguration,refertoChapter7“UsingtheSetupUtilityprogram”onpage97.

Note:Inmostareasoftheworld,LenovorequiresthereturnofthedefectiveCustomerReplaceableUnit
(CRU).InformationaboutthiswillcomewiththeCRUorwillcomeafewdaysaftertheCRUarrives.

Obtainingdevicedrivers

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

Chapter5.Installingorreplacinghardware87

88ThinkCentreM78UserGuide