Solution:Yourscreensaverorpowermanagementmighthavebeenenabled.Doeitherofthefollowing:
–TouchtheTrackPointorthetouchpad,orpressakeytoexitthescreensaver.
–Pressthepowerswitchtoresumefromsleep(standby)orhibernation.
Beeperrors
Table6.Beeperrors
ProblemSolution
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,andoneshortbeep
Makesurethatmemorymodulesar einstalledcorrectly.If
theyare,andyoustillhearthebeeps,havethecomputer
serviced.
OnelongandtwoshortbeepsThevideofunctionhasaproblem.Havethecomputer
serviced.
FivebeepsThesystemboardhasaproblem.Havethecomputer
serviced.
Memoryproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Ifyourmemoryisnotoperatingproperly,checkthefollowingitems:
1.V erifythatthememoryisinstalledandseatedcorrectlyinyourcomputer.
Itmightbenecessarytoremovealladdedmemoriestotestthecomputerwithonlythefactory-installed
memories,andthenreinstallthememoryoneatatimetoensureaproperconnection.F orthe
procedurestoremoveandreinstallamemory,referto“Replacingmemory”onpage76.
2.Checkforerrormessagesduringstartup.
Followtheappr opriatecorrectiveactionsforPower-onself-test(POST)“Errormessages”onpage129.
3.V erifythatthelatestsystemBIOS(UEFIBIOS)foryourmodelhasbeeninstalled.
4.V erifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingmemory”onpage76.
5.Rundiagnosticprograms.See“Diagnosingproblems”onpage127.
Networking
Thefollowingarethemostcommonnetworkingproblems:

Ethernetproblems

•Problem:Yourcomputercannotconnecttothenetwork.
Solution:Makesurethat:
–Thecableisinstalledproperly .
ThenetworkcablemustbesecurelyconnectedbothtotheEthernetconnectorofyourcomputerand
totheRJ45connectorofthehub.Themaximumallowabledistancefr omthecomputertohubis
100meters.Ifthecableisconnectedandthedistanceiswithinacceptablelimitsbuttheproblem
persists,tryadifferentcable.
–Youareusingthecorrectdevicedriver.
ForWindows7:
1.ClickStart,andthenclickControlP anel.
132UserGuide