2.Checkforerrormessagesduringstartup.
Followtheappropriatecorr ectiveactionsforPower-onself-test(POST)“Errormessages”onpage133.
3.VerifythatthelatestUEFIforyourmodelhasbeeninstalled.
4.Verifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingmemory”onpage93.
5.RunLenovoThinkVantageToolbox.
Networking
Thefollowingarethemostcommonnetworkingproblems:

Ethernetproblems

•Problem:Yourcomputercannotconnecttothenetwork.
Solution:Makesurethat:
–Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedbothtotheEthernetconnectorofyourcomputerand
totheRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis
100meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblem
persists,tryadifferentcable.
–Youareusingthecorrectdevicedriver.
ForWindows7:
1.ClickStart,andthenclickControlPanel.
2.ClickHardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,type
thepasswordorprovideconrmation.
4.Ifthe!markistotheleftoftheadapternameunderNetworkadapters,youmightnotusethe
correctdriverorthedriverisnotenabled.T oupdatethedriver ,right-clickthehighlightedadapter.
5.ClickUpdateDriverSoftware,andthenfollowtheinstructionsonthescreen.
ForWindowsXP:
1.ClickStart,andthenclickControlPanel.
2.ClickPerformanceandMaintenance,andthenclickSystem.
3.ClicktheHardwaretab,andclicktheDeviceManagerbutton.
4.IfthexmarkistotheleftoftheadapternameunderNetworkadapter,youmightnotusethe
correctdriverorthedriverisnotenabled.T oupdatethedriver ,right-clickthehighlightedadapter.
5.ClickProperties.ThePropertieswindowappears.
6.ClicktheDrivertab.
7.ClicktheUpdateDriverbutton.TheUpdateDeviceDriverwizardappears.Followtheinstructions
onthescreen.
–Theswitchportandtheadapterhavethesameduplexsetting.
Ifyouconguredtheadapterforfullduplex,makesur etheswitchportisalsoconguredforfull
duplex.Settingthewrongduplexmodecandegradeperformance,causedataloss,orresultinlost
connections.
–Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.
138UserGuide