Lenovo M4350 Desktop User Manual Page 45
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
2.ClickHardwareandSound.
3.ClickDevicesandPrinters.
4.Double-clickUSBEnhancedPerformanceKeyboard.TheUSBEnhancedPerformance
KeyboardCustomizationprogramstarts.
Iftheseactionsdonotcorrecttheproblem,havethecomputerandkeyboardserviced.
Themouseorpointingdevicedoesnotwork
Symptom:Themouseorpointingdevicedoesnotwork.
Actions:
•Verifythatthemouseorpointing-devicecableissecurelyattachedtothecorrectconnectoronthe
computer.Dependingonthetypeofmouseyouhave,themousecablewillconnecttoeitherthe
mouse,serial,orUSBconnector.SomekeyboardshaveintegratedUSBconnectorsthatcanbeused
foraUSBmouseorpointingdevice.
•Verifythatthedevicedriversforthemouseorpointingdeviceareinstalledcorrectly.
•IfyouareusingaUSBkeyboardormouse,verifythattheUSBconnectorsareenabledintheBIOS
settings.See“Enablingordisablingadevice”onpage21
.
Thepointeronthescreendoesnotmovesmoothlywiththemouse
Symptom:Thepointeronthescreendoesnotmovesmoothlywiththemouse.
Action:Erraticmovementofthemousepointerisgenerallycausedbyabuildupofdirt,oils,andother
contaminantsontheballinsidethemouse.Cleanthemouse.See“Opticalmouse”onpage27for
instructions.
Thewirelesskeyboarddoesnotwork
Symptom:Thewirelesskeyboarddoesnotwork.
Action:IftheTransceiverCommunicationsLEDisonandthewirelessKeyboarddoesnotwork,restartyour
computer.Ifrestartingyourcomputerdoesnotsolvetheproblem,verifythatthefollowingconditionsaremet:
•Thebatteriesareproperlyinstalled.
•Thebatteriesstillretaintheircurrent.
•ThewirelessKeyboardislocatedlessthantenmetersawayfromthetransceiver.
•Thetransceiverisfullyinstalled.
Action:IftheTransceiverCommunicationsLEDisnoton,reconnectthetransceiverandthekeyboard.
Monitorproblems
Note:Manymonitorshavestatus-indicatorlightsandbuilt-incontrolsforadjustingbrightness,contrast,
width,height,andotherpictureadjustments.However,thecontrolsvaryfrommonitortypetomonitortype.
Forinformationaboutthestatuslightsandusingthecontrols,refertothedocumentationthatcomes
withyourmonitor.
Selectyoursymptomfromthefollowinglist:
•“Wrongcharactersappearonthescreen”onpage36
•“Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity”onpage36
Chapter7.Troubleshootinganddiagnostics35
- LenovoM4350 1
- UserGuide 1
- FirstEdition(August2013) 2
- ©CopyrightLenovo2013 2
- Contents 3
- Importantsafetyinformation 5
- Powercordsandpoweradapters 6
- Plugsandoutlets 6
- Externaldevices 7
- Heatandproductventilation 7
- Operatingenvironment 8
- Modemsafetyinformation 8
- Lasercompliancestatement 8
- Powersupplystatement 9
- LenovoM4350UserGuide 10
- Chapter1.Productoverview 11
- 2LenovoM4350UserGuide 12
- .Productoverview3 13
- Locatingpartsonthesystemboard 14
- .Productoverview5 15
- 6LenovoM4350UserGuide 16
- Chapter2.Youandyourcomputer 17
- Glareandlighting 18
- Aircirculation 18
- Voltage-selectionswitch 19
- Replacementpowercords 19
- 10LenovoM4350UserGuide 20
- Chapter3.Security 21
- Usingpasswords 22
- BIOSpasswords 22
- Windowspasswords 23
- Usingandunderstandingrewalls 23
- 14LenovoM4350UserGuide 24
- Chapter4.Recoveryinformation 25
- UsingRescueSystem 26
- 18LenovoM4350UserGuide 28
- Viewingandchangingsettings 29
- Passwordconsiderations 30
- Power-OnPassword 30
- AdministratorPassword 30
- HardDiskPassword 30
- Enablingordisablingadevice 31
- Selectingastartupdevice 31
- EnablingErPcompliancemode 32
- ExitingtheSetupUtilityprogram 32
- 24LenovoM4350UserGuide 34
- Chapter6.Preventingproblems 35
- Cleaningandmaintenance 36
- Cleaningyourcomputer 36
- Goodmaintenancepractices 37
- Movingyourcomputer 38
- Basictroubleshooting 39
- Troubleshootingprocedure 40
- Troubleshooting 40
- Audioproblems 41
- CDproblems 42
- DVDproblems 43
- Intermittentproblems 44
- Monitorproblems 45
- Networkingproblems 47
- Performanceandlockupproblems 49
- Printerproblems 51
- Serialportproblems 51
- USBproblems 52
- AppendixA.Notices 53
- Trademarks 54
- Exportclassicationnotice 55
- Televisionoutputnotice 55
- Electronicemissionsnotices 55
- 48LenovoM4350UserGuide 58
- ImportantWEEEinformation 59
- Recyclinginformation 59
- RecyclinginformationforBrazil 60
- 52LenovoM4350UserGuide 62
- EuropeanUnionRoHS 63
- ChinaRoHS 63
- TurkishRoHS 63
- UkraineRoHS 64
- IndiaRoHS 64
- AppendixE.ChinaEnergyLabel 65
- 56LenovoM4350UserGuide 66
- 58LenovoM4350UserGuide 68
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