•Problem:Theadapterstopsworkingfornoapparentreason.
Solution:Thenetworkdriverlesmightbecorruptormissing.Updatethedriverbyreferringtotheabove
solutionfortheproceduretomakesur ethatthecorrectdevicedriverisinstalled.
•Problem:IfyourcomputerisaGigabitEthernetmodelandyouuseaspeedof1000Mbps,the
connectionfailsorerrorsoccur.
Solution:
–UseCategory5wiringandmakesur ethatthenetworkcableissecurelyconnected.
–Connecttoa1000BASE-Thub/switch(not1000BASE-X).
•Problem:TheWakeonLANfeatureisnotworking.
Solution:
–MakesurethatWakeonLANisenabledinThinkPadSetup.
–Ifitis,checkwithyourLANadministratorforthenecessarysettings.
•Problem:IfyourcomputerisaGigabitEthernetmodel,itcannotconnecttothenetworkat1000Mbps.
Instead,itconnectsat100Mbps.
Solution:
–Tryanothercable.
–Makesurethatthelinkpartnerissettoauto-negotiate.
–Makesurethattheswitchis802.3ab-compliant(gigabitovercopper).
AwirelessLANproblemProblem:Youcannotconnecttothenetworkusingthebuilt-inwirelessnetworkcard.
Solution:
•IfyourcomputerisinstalledwithWindows7operatingsystem,ensur ethat:
–YourwirelessLANdriveristhelatestversion.ChecktheWebsiteandconrmthatthedriverversion
supportedbytheAccessConnectionsprogramisthelatestdocument edinthereadmele.
–Yourcomputeriswithinrangeofawirelessaccesspoint.
–Thewirelessradioisenabledbydouble-clickingtheAccessConnectionsicononthetaskbar.
Note:IfyouareusingtheWindows7operatingsyst em,clickShowhiddeniconsonthetaskbar.
TheAccessConnectionsiconisdisplayed.Formoreinformationabouttheicon,refertotheAccess
Connectionshelpinformationsystem.
ChecktheNetworkName(SSID)andyourencryptioninformation.UsetheAccessConnectionsprogram
toverifythiscase-sensitiveinformation.
•IfyoursystemisinstalledwithWindows8operatingsystem,ensurethat:
–YourwirelessLANdriveristhelatestversion.
–Yourcomputeriswithinrangeofawirelessaccesspoint.
–Thewirelessradioisenabled.
–TheAirplanemodeisoff.
AwirelessWANproblemProblem:AmessageisdisplayedindicatingthatanunauthorizedWANcardisinstalled.
Chapter9.Troubleshootingcomputerproblems131