- Lenovo Personal Computer User's Guide

Actions:
•Themonitormightbeoperatinginalow-refreshratedisplaymode.Setthemonitortothehighest,
noninterlacedrefreshratesupportedbyyourmonitorandthevideocontrollerinyourcomputer.
Attention:Usingaresolutionorrefreshratethatisnotsupportedbyyourmonitormightdamageit.Check
thedocumentationthatcomeswithyourmonitortoverifythesupportedrefreshrates.
•Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfartheraway
fromthemonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)
apart.
3.Turnonthemonitor.
•YoucanresettherefreshratethroughyouroperatingsystemControlPanel:
OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound➙Adjust
screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.
•Seeyouroperatingsystemdocumentationorhelpforfurtherinformationonmonitorsettings.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage73fordetails.
Theimageisdiscolored
Symptom:Theimageisdiscolored.
Action:Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfurtherawayfrom
themonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)apart.
3.Turnonthemonitor.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage73
fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage62
•“AwirelessLANproblem”onpage64
•“AwirelessWANproblem”onpage64
•“Bluetoothproblems”onpage64
Formoreinformation,see“HelpandSupport”onpage73.
Ethernetproblems
ForEthernetproblems,selectyoursymptomfromthefollowinglist:
62ThinkCentreUserGuide