Lenovo ThinkPad Edge E425 - A Wireless Lan Problem; Bluetooth Problems

3.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.
–Theswitchportandtheadapterhavethesameduplexsetting.
Ifyouconguredtheadapterforfullduplex,makesuretheswitchportisalsoconguredforfull
duplex.Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlost
connections.
–Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.
•Problem:Theadapterstopsworkingfornoapparentreason.
Solution:Thenetworkdriverlesmightbecorruptormissing.Updatethedriverbyreferringtothe
“Solution”descriptionintheprecedingproblemfortheproceduretomakesurethatthecorrectdevice
driverisinstalled
•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-inwirelessnetworkcard.
Solution:MakesurethatyourwirelessLANdriveristhelatestversioninstalled.ChecktheWebsiteand
conrmthedriverversionsupportedbyAccessConnectionsisthelatestdocumentedinthereadmele.
Makesurethatyourcomputeriswithinrangeofawirelessaccesspoint.
Makesurethatthewirelessradioisenabledbydouble-clickingtheAccessConnectionsicononthe
taskbar.
Note:ForinstructionsonhowtodisplaytheAccessConnectionsstatusiconandthewirelessstatusicon
intheWindowsnoticationarea,refertotheAccessConnectionshelpinformationsystem.
CheckNetworkName(SSID)andyourencryptioninformation.UsetheAccessConnectionsprogramto
verifythiscase-sensitiveinformation.
Bluetoothproblems
•Problem:SounddoesnotcomefromtheBluetoothheadsetorheadphonebutcomesfromthelocal
speakereventhoughtheheadsetorheadphoneisconnectedusingaHeadsetproleorAVprole.
Solution:Dothefollowing:
1.Exittheapplicationthatusesthesounddevice(forexample,WindowsMediaPlayer).
2.OpenControlPanelbyclickingStart➙ControlPanel,andclickHardwareandSound➙Sound
thenselectthePlaybacktab.
3.IfyouareusingaHeadsetprole,selectBluetoothHands-freeAudioandclicktheSetDefault
button.IfyouareusinganAVprole,selectStereoAudioandclicktheSetDefaultbutton.
4.ClickOKtoclosetheSoundwindow.
Chapter9.Troubleshootingcomputerproblems121