Specifications

OntheWindows8orWindows8.1operatingsystem,openControlPanelandclickHardwareandSound

➙Adjustscreenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefresh

rate.OntheWindows8orWindows8.1operatingsystem,dothefollowing:

1.OpenControlPanel.

2.ClickHardwareandSound.

3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconﬁrmation,typethe

passwordorprovideconﬁrmation.

4.IfanexclamationmarkisdisplayednexttoanadapternameunderNetworkadapters,youmight

notbeusingthecorrectdriverorthedriverisnotenabled.Toupdatethedriver,right-clickthe

highlightedadapter.

5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.

•Theswitchportandtheadapterhavethesameduplexsetting.

Ifyouconﬁguredtheadapterforfullduplex,ensurethattheswitchportisalsoconﬁguredforfullduplex.

Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlostconnections.

•Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.

CheckwithyourLANadministratorforthenecessarynetworkingsoftware.

Theadapterstopsworkingfornoapparentreason

Symptom:Theadapterstopsworkingfornoapparentreason.

Action:Thenetworkdriverﬁlesmaybecorruptormissing.Updatethedriverbyreferringtothe“Solution”

descriptionfortheproceduretomakesurethatthecorrectdevicedriverisinstalled.

TheWakeonLANfeatureisnotworking

Symptom:TheWakeonLAN(WOL)featureisnotworking.

Actions:

•MakesurethatWOLisenabledintheBIOSSetupUtilityprogram.

•Ifitis,checkwithyourLANadministratorforthenecessarysettings.

IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnection

failsorerrorsoccur

Symptom:IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,theconnection

failsorerrorsoccur.

Actions:

•UseCategory5wiringandmakesurethatthenetworkcableissecurelyconnected.

•Connecttoa1000BASE-Thub/switch(not1000BASE-X).

IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.Instead,

itconnectsat100Mbps

Symptom:IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.

Instead,itconnectsat100Mbps.

Actions:

•Tryanothercable.

•Makesurethatthelinkpartnerissettoauto-negotiate.

•Makesurethattheswitchis802.3ab-compliant(gigabitovercopper).

Chapter5.Troubleshootinganddiagnostics47