–UseeithertheRescueandRecoveryworkspaceortherecoverydiscstorestorethesyst emtothe
factorystate.Fordetailsaboutrestoringthesystemtothefactorystate,see“Creatingandusing
recoverymedia”onpage.
Iftheproblempersists,havethecomputerserviced.
•Problem:Myscreengoesblankwhilethecomputerison.
Solution:Yourscreensaverorpowermanagementmaybeenabled.Doeitherofthefollowing:
–TouchtheTrackPointorthetouchpad,orpressakeytoexitthescreensaver.
–Pressthepowerbuttontoresumefromsleeporhibernation.
Beeperrors
Table8.Beeperrors
ProblemSolution
Oneshortbeep,pause,threeshortbeeps,pause,three
moreshortbeeps,andoneshortbeep
Makesurethatmemorymodulesareinstalledcorrectly.If
theyare,andyoustillhearthebeeps,havethecomputer
serviced.
OnelongandtwoshortbeepsThevideofunctionhasaproblem.Havethecomputer
serviced.
FourcyclesoffourshortbeepsTheSecurityChiphasaproblem.Havethecomputer
serviced.
FivebeepsThesystemboardhasaproblem.Havethecomputer
serviced.
Memoryproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Ifyourmemoryisnotoperatingproperly,checkthefollowingitems:
1.V erifythatthememoryisinstalledandseatedcorrectlyinyourcomputer.
Itmaybenecessarytoremovealladdedmemoriestotestthecomputerwithonlythefactory-installed
memories,andthenreinstallthememoryoneatatimetoensureaproperconnection.Forthe
procedurestoremoveandreinstallamemory,referto“Replacingamemorymodule”onpage69.
2.Checkforerrormessagesduringstartup.
FollowtheappropriatecorrectiveactionsforPower-onself-test(POST).See“Errormessages”on
page138.
3.V erifythatthelatestUEFIforyourmodelhasbeeninstalled.
4.V erifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingamemorymodule”onpage69.
5.Rundiagnosticprograms.See“Diagnosingproblems”onpage137.
Networking
Thefollowingarethemostcommonnetworkingproblems:

Ethernetproblems

•Problem:Yourcomputercannotconnecttothenetwork.
142UserGuide