Name: Lenovo ThinkPad Edge E420 1141
Brand: Lenovo
Rating: 5 (1 reviews)

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•Problem:Theadapterstopsworkingfornoapparentreason.

Solution:Thenetworkdriverlesmaybecorruptormissing.Updatethedriverbyreferringtothe

“Solution”descriptionfortheproceduretomakesurethatthecorrectdevicedriverisinstalledinthe

precedingproblem.

•Problem:IfyourcomputerisaGigabitEthernetmodelandyouusetheaspeedof1000Mbps,the

connectionfailsorerrorsoccur.

Solution:

–UseCategory5wiringandmakesurethatthenetworkcableissecurelyconnected.

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

•Problem:Yourcomputercannotconnecttothenetworkat1000Mbps.Instead,itconnectsat100Mbps.

Solution:

–Tryanothercable.

–Makesurethatthelinkpartnerissettoauto-negotiate.

–Makesurethattheswitchis802.3ab-compliant(gigabitovercopper).

AwirelessLANproblem

•Problem:Youcannotconnectusingthebuilt-inwirelessnetworkingcard.

Solution:MakesurethatyourwirelessLANdriveristhelatestversioninstalled.ChecktheWebsiteand

conrmthedriverversionsupportedbyAccessConnectionsisthelatestdocumentedintheREADMEle.

Makesurethatyourcomputeriswithinrangeofawirelessaccesspoint.

Makesurethatthewirelessradioisenabledbydouble-clickingtheAccessConnectionsiconinthe

taskbar.

Note:IfyourcomputerisaWindows7model,todisplaytheAccessConnectionsstatusiconandthe

wirelessstatusiconinthesystemtray,refertotheAccessConnectionson-linehelp.

CheckNetworkName(SSID),andyourencryptioninformation.UseAccessConnectionstoverifythis

case-sensitiveinformation.

Note:AccessConnectionsdoesnotsupportconnectiontowirelessWANnetworkinChina.

AwirelessWANproblem

•Message:UnauthorizedWANcardispluggedin-PoweroffandremovetheWANcard.

Solution:TheWANcardisnotsupportedonthiscomputer.Removeit.

Note:Dependingonyourcomputer,somemodelsdonothaveawirelessWAN.

Bluetoothproblems

ForWindows7:

•Problem:SounddoesnotcomefromtheBluetoothheadset/headphonebutcomesfromthelocal

speakereventhoughtheheadset/headphoneisconnectedusingHeadsetproleorAVprole.

Solution:Dothefollowing:

1.Exittheapplicationthatusesthesounddevice(forexample,WindowsMediaPlayer).

2.OpentheControlPanelbyclickingStart➙ControlPanel.

3.ClickHardwareandSound➙Sound.

4.SelectthePlaybacktab.

Chapter10.Troubleshootingcomputerproblems139

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Lenovo ThinkPad Edge E420 1141 Specifications

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