ThinkCentre M90

Lenovo ThinkCentre M90, 3257A9U, M90, ThinkCentre M90p User manual

  • Hello! I am an AI chatbot trained to assist you with the Lenovo ThinkCentre M90 User manual. I’ve already reviewed the document and can help you find the information you need or explain it in simple terms. Just ask your questions, and providing more details will help me assist you more effectively!
ThinkCentre
UserGuide
MachineTypes:3025,3034,3131,3142,3244,3257,3307,3356,
3467,3557,3692,3853,4394,5092,5226,5296,6667,and6673
ThinkCentre
UserGuide
MachineTypes:3025,3034,3131,3142,3244,3257,3307,3356,
3467,3557,3692,3853,4394,5092,5226,5296,6667,and6673
Note
Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandtheThinkCentre
SafetyandWarrantyGuideandAppendixA“Notices”onpage49
.
FirstEdition(October2010)
©CopyrightLenovo2010.
LENOVOproducts,data,computersoftware,andserviceshavebeendevelopedexclusivelyatprivateexpenseandare
soldtogovernmentalentitiesascommercialitemsasdenedby48C.F.R.2.101withlimitedandrestrictedrightsto
use,reproductionanddisclosure.
LIMITEDANDRESTRICTEDRIGHTSNOTICE:Ifproducts,data,computersoftware,orservicesaredeliveredpursuant
aGeneralServicesAdministration“GSAcontract,use,reproduction,ordisclosureissubjecttorestrictionssetforth
inContractNo.GS-35F-05925.
Contents
Importantsafetyinformation.....vii
Chapter1.Productoverview......1
Features..................1
Specications................3
Softwareoverview..............4
SoftwareprovidedbyLenovo........4
AdobeReader..............6
Antivirussoftware.............6
Locations..................6
Locatingconnectorsonthefrontofyour
computer................6
Locatingconnectorsontherearofyour
computer................7
Locatingcomponents...........8
Locatingpartsonthesystemboard.....9
Chapter2.Installingorreplacing
hardware...............11
Handlingstatic-sensitivedevices.......11
Installingorreplacinghardware........11
Installingexternaloptions........11
Openingthecomputercover.......12
Removingandreinstallingthefrontbezel..12
Installingorreplacingamemorymodule...13
Replacingtheharddiskdrive.......14
Replacingtheopticaldrive........16
Replacingthebattery..........17
Replacingtheheatsink.........18
Replacingtheinternalspeaker.......19
ReplacingthefrontaudioandUSB
assembly...............20
Replacingtheacpoweradapter......21
Replacingtheacpoweradapterbracket...22
Replacingthekeyboardormouse.....25
Completingthepartsreplacement.....25
Installingsecurityfeatures..........26
Integratedcablelock..........26
Passwordprotection..........27
Erasinglostorforgottenpasswords(clearing
CMOS)................27
Chapter3.Recoveryinformation...29
Creatingandusingrecoverymedia......29
Creatingrecoverymedia.........29
Usingrecoverymedia..........30
Performingbackupandrecoveryoperations...30
Performingabackupoperation......30
Performingarecoveryoperation......31
UsingtheRescueandRecoveryworkspace...31
Creatingandusingarescuemedium......32
Creatingarescuemedium........32
Usingarescuemedium.........33
Installingorreinstallingdevicedrivers.....33
Solvingrecoveryproblems..........34
Chapter4.UsingtheSetupUtility
program................35
StartingtheSetupUtilityprogram.......35
Viewingandchangingsettings........35
Usingpasswords..............35
Passwordconsiderations.........35
Power-OnPassword..........36
AdministratorPassword.........36
HardDiskPassword...........36
Setting,changing,anddeletingapassword.36
Enablingordisablingadevice........36
Selectingastartupdevice..........37
Selectingatemporarystartupdevice....37
Selectingorchangingthestartupdevice
sequence...............37
ExitingfromtheSetupUtilityprogram.....37
Chapter5.Updatingsystem
programs...............39
Usingsystemprograms...........39
Updating(ashing)theBIOSfromadisc....39
Updating(ashing)theBIOSfromyouroperating
system..................40
RecoveringfromaPOST/BIOSupdatefailure..40
Chapter6.Troubleshootingand
diagnostics..............41
Basictroubleshooting............41
Diagnosticprograms............42
LenovoThinkVantageToolbox.......42
PC-DoctorforRescueandRecovery....43
PC-DoctorforDOS...........43
Cleaninganopticalmouse..........44
Chapter7.Gettinginformation,help,
andservice..............45
Informationresources............45
OnlineBooksfolder...........45
LenovoThinkVantageTools........45
©CopyrightLenovo2010
v
ThinkVantageProductivityCenter.....45
LenovoWelcome............46
AccessHelp..............46
SafetyandWarranty...........46
LenovoWebsite(http://www.lenovo.com)..46
Helpandservice..............47
Usingthedocumentationanddiagnostic
programs...............47
Callingforservice............47
Usingotherservices..........48
Purchasingadditionalservices......48
AppendixA.Notices.........49
Televisionoutputnotice...........50
EuropeanconformanceCEmark.......50
Trademarks................50
Index..................51
viThinkCentreUserGuide
Importantsafetyinformation
CAUTION:
Beforeusingthismanual,besuretoreadandunderstandalltherelatedsafetyinformationforthis
product.RefertotheThinkCentreSafetyandWarrantyGuidethatyoureceivedwiththisproductfor
thelatestsafetyinformation.Readingandunderstandingthissafetyinformationreducestheriskof
personalinjuryandordamagetoyourproduct.
IfyounolongerhaveacopyoftheThinkCentreSafetyandWarrantyGuide,youcanobtainaPortable
DocumentFormat(PDF)versionfromtheLenovo
®
SupportWebsiteat:
http://www.lenovo.com/support
©CopyrightLenovo2010
vii
viiiThinkCentreUserGuide
Chapter1.Productoverview
Thischapterdescribesthecomputerfeatures,specications,preinstalledsoftwareprograms,andpart
andconnectorlocations.
Features
Thissectionprovidesinformationaboutthecomputerfeatures.
Systeminformation
Thefollowinginformationcoversavarietyofmodels.Forinformationaboutyourspecicmodel,usethe
SetupUtilityprogram.SeeChapter4“UsingtheSetupUtilityprogram”onpage35
.
Microprocessor
Yourcomputercomeswithoneofthefollowingmicroprocessors(internalcachesizevariesbymodeltype):
Intel
®
Core™i3microprocessor
IntelCorei5microprocessor
IntelPentium
®
microprocessor
Memory
Supportsuptotwodoubledatarate3smalloutlinedualinlinememorymodules(DDR3SODIMMs)
Internaldrives
Opticaldrive
SerialAdvancedTechnologyAttachment(SATA)harddiskdrive(availableinsomemodels)
Videosubsystem
IntegratedgraphicscardforaVideoGraphicsArray(VGA)connectorandaDisplayPortconnector
Audiosubsystem
Integratedhigh-denition(HD)audio
Audioline-inconnector,audioline-outconnector,andmicrophoneconnectorontherearpanel
Microphoneconnectorandheadphoneconnectoronthefrontpanel
Internalspeaker
Connectivity
100/1000MbpsintegratedEthernetcontroller
PeripheralComponentInterconnect(PCI)Faxmodem(availableinsomemodels)
Systemmanagementfeatures
Abilitytostorepower-onself-test(POST)hardwaretestresults
Automaticpower-onstartup
DesktopManagementInterface(DMI)
IntelActiveManagementTechnology(AMT)(availableonsomemodels)
©CopyrightLenovo2010
1
IntelMatrixStorageManager
PrebootExecutionEnvironment(PXE)
SecureManagedClient(SMC)(somemodels)
SystemManagement(SM)BasicInput/OutputSystem(BIOS)andSMsoftware
WakeonLAN
WakeonRing
WindowsManagementInstrumentation(WMI)
Input/Output(I/O)features
EightUniversalSerialBus(USB)connectors(twoonthefrontpanelandsixontherearpanel)
Ethernetconnector
OneDisplayPortconnector
One9-pinserialport(optional)
OnePersonalSystem/2
®
(PS/2
®
)keyboardconnector(optional)
OnePS/2mouseconnector(optional)
OneVGAmonitorconnector
Threeaudioconnectorsontherearpanel(audioline-inconnector,audioline-outconnector,and
microphoneconnector)
Twoaudioconnectorsonthefrontpanel(microphoneconnectorandheadphoneconnector)
Formoreinformation,see“Locatingconnectorsonthefrontofyourcomputer”onpage6
and“Locating
connectorsontherearofyourcomputer”onpage7.
Expansion
Oneharddiskdrivebay
Oneopticaldrivebay
OnePCIcardslot
PowerSupply
130-wattpoweradapter
AdvancedCongurationandPowerInterface(ACPI)support
Securityfeatures
Computrace
Coverpresenceswitch(alsocalledintrusionswitch)
Enablingordisablingadevice
EnablingordisablingUSBconnectorsindividually
Harddiskdrivepassword
Keyboardwithngerprintreader(shippedwithsomemodels)
Power-onpassword(POP),administratorpassword,andharddiskdrivepasswordtodeterunauthorized
useofyourcomputer
Startupsequencecontrol
Startupwithoutkeyboardormouse
Supportforanintegratedcablelock(Kensingtonlock)
2ThinkCentreUserGuide
TrustedPlatformModule(TPM)
Preinstalledsoftwareprograms
Yourcomputerispreinstalledwithsomesoftwareprogramstohelpyouworkmoreeasilyandsecurely.For
moreinformation,see“Softwareoverview”onpage4
.
Preinstalledoperatingsystem
Yourcomputerispreinstalledwithoneofthefollowingoperatingsystems:
Microsoft
®
Windows
®
7
MicrosoftWindowsVista
®
Operatingsystem(s),certiedortestedforcompatibility
1
(variesbymodeltype)
Linux
®
Specications
Thissectionliststhephysicalspecicationsforyourcomputer.
1.Theoperatingsystem(s)listedherearebeingcertiedortestedforcompatibilityatthetimethispublicationgoesto
press.AdditionaloperatingsystemsmightbeidentiedbyLenovoascompatiblewithyourcomputerfollowingthe
publicationofthismanual.Thislistissubjecttochange.T odetermineifanoperatingsystemhasbeencertiedor
testedforcompatibility,checktheWebsiteoftheoperatingsystemvendor.
Chapter1.Productoverview3
Dimensions
Width:275mm(10.83inches)
Height:79mm(3.11inches)
Depth:238mm(9.37inches)
Weight
Maximumcongurationasshipped:4.18kg(9.22lbs)
Environment
Airtemperature:
Operating:10°Cto35°C(50°Fto95°F)
Non-operating:-40°Cto60°C(-40°Fto140°F)
Non-operating:-10°Cto60°C(14°Fto140°F)(withoutpackage)
Humidity:
Operating:20%to80%(non-condensing)
Non-operating:20%to90%(non-condensing)
Altitude:
Operating:-50to10000ft(-15.2to3048m)
Non-operating:-50to35000ft(-15.2to10668m)
Electricalinput
Inputvoltage:
Lowrange:
Minimum:100Vac
Maximum:127Vac
Inputfrequencyrange:50to60Hz
Voltage-selectionswitchsetting:115Vac
Highrange:
Minimum:200Vac
Maximum:240Vac
Inputfrequencyrange:50to60Hz
Voltage-selectionswitchsetting:230Vac
Softwareoverview
Thissectiondescribesthesoftwarepreinstalledonthecomputersthathaveaninternalharddiskdrive
andanoperatingsystemfromLenovo.
SoftwareprovidedbyLenovo
ThefollowingsoftwareprogramsareprovidedbyLenovotohelpyouimproveproductivityandreducethe
costassociatedwithmaintainingyourcomputer.Softwareprogramsprovidedwithyourcomputermight
varydependingonyourcomputermodeltypeandpreinstalledoperatingsystem.
LenovoThinkVantageTools
TheLenovoThinkVantage
®
Toolsprogramguidesyoutoahostofinformationsourcesandprovideseasy
accesstovarioustoolstohelpyouworkmoreeasilyandsecurely.Formoreinformation,see“Lenovo
ThinkVantageTools”onpage45
.
4ThinkCentreUserGuide
Note:TheLenovoThinkVantageToolsprogramisonlyavailableoncomputerswiththeWindows7operating
systemfromLenovo.
ThinkVantageProductivityCenter
TheThinkVantageProductivityCenterprogramguidesyoutoahostofinformationandtoolstohelpyouset
up,understand,maintain,andenhanceyourcomputer.
Note:TheThinkVantageProductivityCenterprogramisonlyavailableoncomputerspreinstalledwith
theWindowsVistaoperatingsystemfromLenovo.
LenovoWelcome
TheLenovoWelcomeprogramintroducesyoutosomeinnovativebuilt-infeaturesofLenovoandguidesyou
throughafewimportantsetuptaskstohelpyoumakethemostofyourcomputer.
ThinkVantageRescueandRecovery
TheThinkVantageRescueandRecovery
®
programisaonebuttonrecoveryandrestoresolutionthat
includesasetofselfrecoverytoolstohelpusersdiagnosecomputerproblems,gethelp,andrecoverfrom
systemcrashesquickly,eveniftheprimaryoperatingsystemwillnotstart.
ThinkVantageClientSecuritySolution
TheThinkVantageClientSecuritySolutionprogramisavailableonselectLenovocomputers.Ithelpsprotect
yourinformation,includingvitalsecurityinformationlikepasswords,encryptionkeys,andelectronic
credentials,whileguardingagainstunauthorizeduseraccesstodata.
Note:TheThinkVantageClientSecuritySolutionprogramisonlyavailableoncomputerspreinstalledwith
theWindowsVistaoperatingsystemfromLenovo.
PasswordManager
ThePasswordManagerprogramhelpsyouautomaticallycaptureandllinauthenticationinformationfor
WindowsapplicationsandWebsites.
Note:ThePasswordManagerprogramisonlyavailableoncomputerspreinstalledwiththeWindows7
operatingsystemfromLenovo.
PowerManager
ThePowerManagerprogramprovidesconvenient,exible,andcompletepowermanagementforyour
ThinkCentre
®
computer.ByusingthePowerManagerprogram,youcanadjustyourpowersettingsto
achievethebestbalancebetweensystemperformanceandpowersaving.
ProductRecovery
TheProductRecoveryprogramenablesyoutorestorethecontentsoftheharddiskdrivetothefactory
defaultsettings.
FingerprintSoftware
Theintegratedngerprintreaderprovidedonsomekeyboardsenablesyoutoenrollyourngerprintand
associateitwithyourpower-onpassword,harddiskdrivepassword,andWindowspassword.Asaresult,
ngerprintauthenticationcanreplacepasswordsandenablesimpleandsecureuseraccess.Angerprint
readerkeyboardisavailablewithselectcomputersorcanbepurchasedforcomputersthatsupportthis
option.
Chapter1.Productoverview5
LenovoThinkVantageToolbox
TheLenovoThinkVantageT oolboxprogramhelpsyoumaintainyourcomputer,improvecomputingsecurity,
diagnosecomputerproblems,getfamiliarwiththeinnovativetechnologiesprovidedbyLenovo,andgetmore
informationaboutyourcomputer.See“LenovoThinkVantageToolbox”onpage42
fordetailedinformation.
PC-DoctorforRescueandRecovery
ThePC-DoctorforRescueandRecoverydiagnosticprogramispreinstalledonyourharddiskdrive.Itis
partoftheRescueandRecoveryworkspaceoneachLenovocomputertodiagnosehardwareproblems
andreportoperating-system-controlledsettingsthatcancausehardwarefailures.UsethePC-Doctorfor
RescueandRecoverydiagnosticprogramifyouareunabletostarttheWindowsoperatingsystem.See
“PC-DoctorforRescueandRecovery”onpage43
formoreinformation.
AdobeReader
TheAdobeReaderprogramisatoolusedtoview,print,andsearchPDFdocuments.
See“OnlineBooksfolderonpage45formoreinformationaboutaccessingtheonlinebooksandthe
LenovoWebsite.
Antivirussoftware
Yourcomputercomeswithantivirussoftwarethatyoucanusetodetectandeliminateviruses.Lenovo
providesafullversionofantivirussoftwareonyourharddiskdrivewithafree30-daysubscription.After30
days,youmustrenewthelicensetocontinuereceivingtheantivirusprogramupdates.
Locations
Locatingconnectorsonthefrontofyourcomputer
Frontconnectorlocationsshowsthelocationsoftheconnectorsonthefrontofyourcomputer.
Figure1.Frontconnectorlocations
6ThinkCentreUserGuide
1USBconnector
3Microphoneconnector
2Headphoneconnector
4USBconnector
Locatingconnectorsontherearofyourcomputer
Rearconnectorlocationsshowsthelocationsoftheconnectorsontherearofyourcomputer.Some
connectorsontherearofyourcomputerarecolor-codedtohelpyoudeterminewheretoconnectthe
cablesonyourcomputer.
Figure2.Rearconnectorlocations
1VGAmonitorconnector8Cover-releasebutton
2USBconnectors(3)9PCIcardslot
3Ethernetconnector10Audioline-outconnector
4Audioline-inconnector11Microphoneconnector
5PS/2keyboardandmouseconnectors
(optional)
12USBconnectors(3)
6Serialport(optional)
13DisplayPortconnector
7Integratedcablelockslot14acpoweradapterconnector
ConnectorDescription
Audioline-inconnector
Usedtoreceiveaudiosignalsfromanexternalaudiodevice,suchasastereo
system.Whenyouattachanexternalaudiodevice,acableisconnectedbetween
theaudioline-outconnectorofthedeviceandtheaudioline-inconnectorofthe
computer.
Audioline-outconnector
Usedtosendaudiosignalsfromthecomputertoexternaldevices,suchas
poweredstereospeakers(speakerswithbuilt-inampliers),headphones,
multimediakeyboards,ortheaudioline-inconnectoronastereosystemorother
externalrecordingdevice.
Chapter1.Productoverview7
ConnectorDescription
DisplayPortconnector
Usedtoattachahigh-performancemonitor,adirect-drivemonitor,orother
devicesthatuseaDisplayPortconnector.
Ethernetconnector
UsedtoattachanEthernetcableforalocalareanetwork(LAN).
Note:TooperatethecomputerwithinFCCClassBlimits,useaCategory5
Ethernetcable.
MicrophoneconnectorUsedtoattachamicrophonetoyourcomputerwhenyouwanttorecordsoundor
ifyouusespeech-recognitionsoftware.
Serialport(optional)
Usedtoattachanexternalmodem,aserialprinter,orotherdevicesthatusea
9-pinserialport.
PS/2keyboardconnector
(optional)
UsedtoattachakeyboardthatusesaPS/2keyboardconnector.
PS/2mouseconnector(optional)Usedtoattachamouse,atrackball,orotherpointingdevicesthatuseaPS/2
mouseconnector.
USBconnectorUsedtoattachadevicethatrequiresaUSBconnector,suchasaUSBkeyboard,
aUSBmouse,aUSBscanneroraUSBprinter.IfyouhavemorethaneightUSB
devices,youcanpurchaseaUSBhub,whichyoucanusetoconnectadditional
USBdevices.
VGAmonitorconnectorUsedtoattachaVGAmonitororotherdevicesthatuseaVGAmonitorconnector.
Locatingcomponents
Figure3“Componentlocations”onpage8showsthelocationsofthevariouscomponentsinyourcomputer.
Toopenthecomputercover,see“Openingthecomputercoveronpage12
.
Figure3.Componentlocations
1Opticaldrive
5Heatsink
2Frontbezel6Memorymodule
8ThinkCentreUserGuide
3Harddiskdrive(installedinsomemodels)
7Battery
4Systemfanassembly
8Internalspeaker
Locatingpartsonthesystemboard
Figure4“Systemboardpartlocations”onpage9showsthelocationsofthepartsonthesystemboard.
Figure4.Systemboardpartlocations
1Thermalsensorconnector
10PCIcardslot
2Memoryslots(2)11FrontUSBconnector2
3Battery
12Coverpresenceswitchconnector(Intrusionswitch
connector)
4Systemfanconnector13FrontUSB,frontpanel,andfrontaudioconnector
5Internalspeakerconnector
14SATAconnector1
6Serial(COM)connector
15Microprocessorfanconnector
7SATAconnector2andeSATAconnector
164-pinpowerconnector
8PS/2keyboardandmouseconnector
17Microprocessor
9ClearCMOS(ComplementaryMetalOxide
Semiconductor)/Recoveryjumper
Chapter1.Productoverview9
10ThinkCentreUserGuide
Chapter2.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
reducesstaticelectricityinthepackageandyourbody.
Whenpossible,removethenewpartfromthestatic-protectivepackaging,andinstallitdirectlyinthe
computerwithoutsettingthepartdown.Whenthisisnotpossible,placethestatic-protectivepackage
thatthepartcameinonasmooth,levelsurfaceandplacethepartonit.
Donotplacethepartonthecomputercoverorothermetalsurface.
Installingorreplacinghardware
Thissectionprovidesinstructionsonhowtoinstallorreplacehardwareforyourcomputer.Youcanexpand
thecapabilitiesofyourcomputerandmaintainyourcomputerbyinstallingorreplacinghardware.
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Notes:
1.UseonlycomputerpartsprovidedbyLenovo.
2.Wheninstallingorreplacinganoption,usetheappropriateinstructionsinthissectionalongwiththe
instructionsthatcomewiththeoption.
Installingexternaloptions
Youcanconnectexternaloptionstoyourcomputer,suchasexternalspeakers,aprinter,orascanner.For
someexternaloptions,youmustinstalladditionalsoftwareinadditiontomakingthephysicalconnection.
Wheninstallinganexternaloption,see“Locatingconnectorsonthefrontofyourcomputeronpage6and
“Locatingconnectorsontherearofyourcomputer”onpage7
toidentifytherequiredconnector.Then,
usetheinstructionsthatcomewiththeoptiontohelpyoumaketheconnectionandinstallanysoftware
ordevicedriversthatarerequiredfortheoption.
©CopyrightLenovo2010
11
Openingthecomputercover
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoopenthecomputercover.
CAUTION:
Turnoffthecomputerandwaitthreetoveminutestoletthecomputercoolbefore
openingthecomputercover.
Toopenthecomputercover,dothefollowing:
1.Removeallmediafromthedrives.Then,turnoffallattacheddevicesandthecomputer.
2.Disconnectallpowercordsfromelectricaloutlets.
3.Disconnectthepowercords,Input/Outputcables,andanyothercablesthatareconnectedtothe
computer.See“Locatingconnectorsonthefrontofyourcomputer”onpage6and“Locatingconnectors
ontherearofyourcomputeronpage7
.
4.Removeanylockingdevicethatsecuresthecomputercover,suchasanintegratedcablelock.See
“Integratedcablelock”onpage26.
5.Carefullyliftandpositionthecomputerupsidedownasshownin.
6.Pivotthecover-releasebutton1ontherearofthecomputerandthenopenthecomputercoverasshown.
Figure5.Openingthecomputercover
Removingandreinstallingthefrontbezel
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoremoveandreinstallthefrontbezel.
12ThinkCentreUserGuide
/