Lenovo M79 User's Guide Page 63
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- Table of contents
- TROUBLESHOOTING
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Chapter7.Troubleshootinganddiagnostics
Thischapterprovidesinformationaboutdiagnosingandtroubleshootingcomputerproblems.Ifyour
computerproblemisnotdescribedhere,seeChapter10“Gettinginformation,help,andservice”onpage
113foradditionaltroubleshootingresources.
Basictroubleshooting
Thefollowingtableprovidessomebasicinstructionstohelpyoutroubleshootyourcomputerproblems.
Note:Ifyoucannotcorrecttheproblem,havethecomputerserviced.Foralistofserviceandsupport
telephonenumbers,refertotheSafety,Warranty,andSetupGuidethatcomeswithyourcomputerorgoto
theLenovoSupportWebsiteat:
http://www.lenovo.com/support/phone
SymptomAction
Thecomputerdoesnotstart
whenyoupressthepower
button.
Ensurethat:
•Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.
•Ifyourcomputerhasasecondarypowerswitchontherearofthecomputer,
ensurethatitisswitchedon.
•Thepowerindicatoronthefrontofthecomputerison.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
Themonitorscreenisblank.Ensurethat:
•Themonitorsignalcableiscorrectlyconnectedtothemonitorandtothe
appropriatemonitorconnectoronthecomputer.
•Themonitorpowercordiscorrectlyconnectedtothemonitorandtoaworking
electricaloutlet.
•Themonitoristurnedonandthebrightnessandcontrastissetcorrectly.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
•Ifyourcomputerhasadiscretegraphicscardinstalled,besuretouseamonitor
connectoronthediscretegraphicscard.
Thekeyboarddoesnotwork.Ensurethat:
•Thecomputeristurnedon.
•ThekeyboardissecurelyconnectedtoaPS/2keyboardconnectororaUSB
connectoronthecomputer.
•Nokeysarestuck.
Themousedoesnotwork.Ensurethat:
•Thecomputeristurnedon.
•ThemouseissecurelyconnectedtoaPS/2mouseconnectororaUSB
connectoronthecomputer.
•Themouseisclean.Referto“Opticalmouse”onpage49forfurtherinformation.
©CopyrightLenovo2014
51
- ThinkCentreM79 1
- UserGuide 1
- FirstEdition(July2014) 2
- Contents 3
- Beforeusingthismanual 7
- Serviceandupgrades 7
- Staticelectricityprevention 8
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Lasercompliancestatement 10
- Powersupplystatement 11
- Cleaningandmaintenance 11
- Chapter1.Productoverview 13
- 2ThinkCentreM79UserGuide 14
- 4ThinkCentreM79UserGuide 16
- Locatingcomponents 17
- Locatingpartsonthesystemboard 18
- Locatinginternaldrives 19
- Features 20
- Chapter1.Productoverview9 21
- Chapter1.Productoverview11 23
- Specifications 24
- Lenovoprograms 24
- Chapter1.Productoverview13 25
- Chapter1.Productoverview15 27
- Chapter2.Usingyourcomputer 29
- Usingthefingerprintreader 30
- Usingthewheelmouse 30
- Managingpower 30
- AutomaticPower-onfeatures 31
- Settingthecomputervolume 31
- Usingadisc 32
- Usingtheopticaldrive 32
- Handlingandstoringadisc 33
- Playingandremovingadisc 33
- Recordingadisc 33
- Chapter2.Usingyourcomputer23 35
- Frequentlyaskedquestions 36
- Chapter3.Youandyourcomputer 37
- Glareandlighting 38
- Aircirculation 38
- Accessibilityinformation 38
- Chapter3.Youandyourcomputer27 39
- Chapter3.Youandyourcomputer29 41
- Chapter4.Security 43
- 32ThinkCentreM79UserGuide 44
- Chapter4.Security33 45
- Attachingacablelock 46
- Usingpasswords 46
- BIOSpasswords 46
- Configuringthefingerprintreader 47
- Usingandunderstandingfirewalls 47
- Protectingdataagainstviruses 47
- Windowspasswords 47
- 36ThinkCentreM79UserGuide 48
- Chapter5.Advancedconfiguration 49
- Passwordconsiderations 50
- Enablingordisablingadevice 51
- Selectingastartupdevice 52
- EnablingErPLPScompliancemode 52
- ICEperformancemode 53
- ICEthermalalert 53
- ExitingtheSetupUtilityprogram 54
- UpdatingorrecoveringtheBIOS 54
- BIOSlevels 54
- Usingsystemprograms 54
- UpdatingtheBIOSfromadisc 55
- 46ThinkCentreM79UserGuide 58
- Chapter6.Preventingproblems 59
- Computer 60
- Keyboard 60
- Opticalmouse 61
- Displayscreen 61
- Movingyourcomputer 62
- Basictroubleshooting 63
- Troubleshootingprocedure 64
- Troubleshooting 64
- NoaudioinWindows 65
- DVDproblems 66
- Intermittentproblems 67
- Harddiskdriveproblems 67
- Keysonthekeyboarddonotwork 68
- Themousedoesnotwork 68
- Theimageappearstobeflickering 69
- Theimageisdiscolored 70
- Ethernetproblems 70
- HeadsetprofileorAVprofile 71
- Performanceandlockupproblems 72
- Insufficientmemory 73
- Diagnostics 74
- LenovoSolutionCenter 74
- 64ThinkCentreM79UserGuide 76
- Chapter8.Recoveryinformation 77
- Creatingrecoverymedia 78
- Usingrecoverymedia 78
- Performingabackupoperation 78
- Performingarecoveryoperation 78
- Creatingarescuemedium 80
- Usingarescuemedium 80
- Solvingrecoveryproblems 82
- Refreshingyourcomputer 82
- 72ThinkCentreM79UserGuide 84
- Installingorreplacinghardware 85
- Installingexternaloptions 85
- Removingthecomputercover 85
- InstallingorreplacingaPCIcard 88
- Figure14.RemovingaPCIcard 89
- Figure15.InstallingaPCIcard 90
- 1onthememory 92
- Replacingtheslimcardreader 94
- Replacingthebattery 97
- ThinkCentreM79UserGuide 100
- Replacingthemicroprocessor 101
- Replacingtheharddiskdrive 103
- 1,pin2,pin3 104
- Installingthesolid-statedrive 105
- Replacingtherearfanassembly 106
- Replacingthethermalsensor 109
- RemovingthefrontWi-Fiantenna 115
- InstallingtherearWi-Fiantenna 115
- RemovingtherearWi-Fiantenna 116
- RemovingtheWi-Ficardmodule 117
- RemovingtheWi-Fiadaptercard 118
- 1toopenthePCIcardlatch2 119
- InstallingtheWi-Fiunits 120
- Replacingthekeyboardormouse 121
- Completingthepartsreplacement 122
- Obtainingdevicedrivers 123
- 112ThinkCentreM79UserGuide 124
- Informationresources 125
- LenovoThinkVantageTools 125
- HelpandSupport 125
- SafetyandWarranty 125
- LenovoWebsite 125
- LenovoSupportWebsite 126
- Helpandservice 126
- Callingforservice 126
- Usingotherservices 127
- Purchasingadditionalservices 127
- 116ThinkCentreM79UserGuide 128
- Exportclassificationnotice 129
- Electronicemissionsnotices 129
- Eurasiancompliancemark 131
- Brazilregulatorynotice 131
- Mexicoregulatorynotice 131
- 120ThinkCentreM79UserGuide 132
- ImportantWEEEinformation 133
- RecyclinginformationforJapan 133
- RecyclinginformationforBrazil 134
- 124ThinkCentreM79UserGuide 136
- EuropeanUnionRoHS 137
- ChinaRoHS 137
- TurkishRoHS 137
- UkraineRoHS 138
- IndiaRoHS 138
- AppendixD.ChinaEnergyLabel 139
- 128ThinkCentreM79UserGuide 140
- ©CopyrightLenovo2014 141
- 130ThinkCentreM79UserGuide 142
- AppendixF.Notices 143
- Trademarks 144
- 134ThinkCentreM79UserGuide 146
- 136ThinkCentreM79UserGuide 148
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