Personal Computer User Manual

•IfyouareusingaUSBkeyboardormouse,verifythattheUSBconnectorsareenabledintheBIOS
settings.See“Enablingordisablingadevice”onpage69.
Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on
page101forinstructions).Ifyouneedtechnicalassistance,seeChapter12“Gettinginformation,help,and
service”onpage103.
Thepointeronthescreendoesnotmovesmoothlywiththemouse
Symptom:Thepointeronthescreendoesnotmovesmoothlywiththemouse.
Action:Erraticmovementofthemousepointerisgenerallycausedbyabuildupofdirt,oils,andother
contaminantsontheballinsidethemouse.Cleanthemouse.See“Opticalmouse”onpage83for
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”onpage93
•“Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity”onpage94
•“Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsomeapplication
programs”onpage94
•“Theimageappearstobeickering”onpage94
•“Theimageisdiscolored”onpage95
Wrongcharactersappearonthescreen
Symptom:Wrongcharactersappearonthescreen.
Action:Havethecomputerserviced.Fordetails,seeChapter12“Gettinginformation,help,andservice”on
page103.
Chapter11.Troubleshootinganddiagnostics93