Personal Computer User Manual

ManualsBrandsLenovo ManualsDesktop606

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Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter12“Getting

information,help,andservice”onpage101fordetails.

Ethernetproblems

ForEthernetproblems,selectyoursymptomfromthefollowinglist:

•“Yourcomputercannotconnecttothenetwork”onpage93

•“Theadapterstopsworkingfornoapparentreason”onpage93

•“IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnectionfails

orerrorsoccur”onpage94

•“IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,

itconnectsat100Mbps”onpage94

Yourcomputercannotconnecttothenetwork

Symptom:Yourcomputercannotconnecttothenetwork.

Actions:Makesurethat:

•Thecableisinstalledproperly.

ThenetworkcablemustbesecurelyconnectedtoboththeEthernetconnectorofyourcomputerand

theRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis100

meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblempersists,try

adifferentcable.

•Thecableisinstalledproperly.

•Youareusingthecorrectdevicedriver.

OntheWindows7operatingsystem,dothefollowing:

1.ClickStart➙ControlPanel.

2.ClickHardwareandSound.

3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe

passwordorprovideconrmation.

4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmightnot

usethecorrectdriverorthedriverisnotenabled.Toupdatethedriver,right-clickthehighlighted

adapter.

5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.

•Theswitchportandtheadapterhavethesameduplexsetting.

Ifyouconguredtheadapterforfullduplex,makesuretheswitchportisalsoconguredforfullduplex.

Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlostconnections.

•Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.

CheckwithyourLANadministratorforthenecessarynetworkingsoftware.

Theadapterstopsworkingfornoapparentreason

Symptom:Theadapterstopsworkingfornoapparentreason.

Action:Thenetworkdriverlesmaybecorruptormissing.Updatethedriverbyreferringtothe“Solution”

descriptionfortheproceduretomakesurethatthecorrectdevicedriverisinstalled.

TheWakeonLANfeatureisnotworking

Symptom:TheWakeonLAN(WOL)featureisnotworking.

Chapter11.Troubleshootinganddiagnostics93