Solution:Yourscreensaverorpowermanagementmighthavebeenenabled.Doeitherofthefollowing:
–TouchtheTrackPointorthetouchpad,orpressakeytoexitthescreensaver.
–Pressthepowerswitchtoresumefromsleep(standby)orhibernation.
Beeperrors
Table6.Beeperrors
Problem
Solution
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,andoneshortbeep
Makesurethatmemorymodulesareinstalledcorrectly.If
theyare,andyoustillhearthebeeps,havethecomputer
serviced.
Onelongandtwoshortbeeps
Thevideofunctionhasaproblem.Havethecomputer
serviced.
FivebeepsThesystemboardhasaproblem.Havethecomputer
serviced.
Memoryproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Ifyourmemoryisnotoperatingproperly,checkthefollowingitems:
1.Verifythatthememoryisinstalledandseatedcorrectlyinyourcomputer.
Itmightbenecessarytoremovealladdedmemoriestotestthecomputerwithonlythefactory-installed
memories,andthenreinstallthememoryoneatatimetoensureaproperconnection.Forthe
procedurestoremoveandreinstallamemory,referto“Replacingmemory”onpage76.
2.Checkforerrormessagesduringstartup.
FollowtheappropriatecorrectiveactionsforPower-onself-test(POST)“Errormessages”onpage129.
3.VerifythatthelatestsystemBIOS(UEFIBIOS)foryourmodelhasbeeninstalled.
4.Verifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingmemory”onpage76
.
5.Rundiagnosticprograms.See“Diagnosingproblems”onpage127.
Networking
Thefollowingarethemostcommonnetworkingproblems:
Ethernetproblems
•Problem:Yourcomputercannotconnecttothenetwork.
Solution:Makesurethat:
–Thecableisinstalledproperly.
ThenetworkcablemustbesecurelyconnectedbothtotheEthernetconnectorofyourcomputerand
totheRJ45connectorofthehub.Themaximumallowabledistancefromthecomputertohubis
100meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblem
persists,tryadifferentcable.
–Youareusingthecorrectdevicedriver.
ForWindows7:
1.ClickStart,andthenclickControlPanel.
132UserGuide
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