Specifications

Action:Thecomputerisprobablysetforenergysavingswiththepower-managementfeature.Ifthe

power-managementfeatureisenabled,disablingitorchangingthesettingsmightsolvetheproblem.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on

page53

forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage31.

Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustart

someapplicationprograms

Symptom:Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsome

applicationprograms.

Actions:

•Makesurethemonitorsignalcableissecurelyconnectedtothemonitorandthemonitorconnectoron

thecomputer.Aloosecablecancauseintermittentproblems.

•Verifythatthenecessarydevicedriversfortheapplicationprogramsareinstalled.Refertothe

documentationfortheaffectedapplicationprogramtoseeifdevicedriversarerequired.

Iftheseactionsdonotcorrecttheproblem,runthediagnosticprograms(see“LenovoSolutionCenter”on

page53forinstructions).Ifyouneedtechnicalassistance,see“LenovoSupportWebsite”onpage31.

Theimageappearstobeﬂickering

Symptom:Theimageappearstobeﬂickering.

Actions:

•Themonitormightbeoperatinginalow-refreshratedisplaymode.Setthemonitortothehighest,

noninterlacedrefreshratesupportedbyyourmonitorandthevideocontrollerinyourcomputer.

Attention:Usingaresolutionorrefreshratethatisnotsupportedbyyourmonitormightdamageit.

Checkthedocumentationthatcomeswithyourmonitortoverifythesupportedrefreshrates.

•Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticﬁeldsaroundother

devices,suchastransformers,appliances,ﬂuorescentlights,andothermonitorsmightbecausingthe

problem.Moveﬂuorescentdesklightingoranyequipmentthatproducesmagneticﬁeldsfartheraway

fromthemonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:

1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)

2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)

apart.

3.Turnonthemonitor.

•YoucanresettherefreshratethroughyouroperatingsystemControlPanel:

OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound➙Adjust

screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.

OntheWindows8orWindows8.1operatingsystem,openControlPanelandclickHardwareand

Sound➙Adjustscreenresolution➙AdvancedSettings.ThenclicktheMonitortabandselecta

newrefreshrate.

•Seeyouroperatingsystemdocumentationorhelpforfurtherinformationonmonitorsettings.

Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.See“LenovoSupportWeb

site”onpage31

fordetails.

Theimageisdiscolored

Symptom:Theimageisdiscolored.

Chapter5.Troubleshootinganddiagnostics45