Memoryproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Ifyourmemoryisnotoperatingproperly,checkthefollowingitems:
1.Verifythatthememoryisinstalledandseatedcorrectlyinyourcomputer.
Itmaybenecessarytoremovealladdedmemoriestotestthecomputerwithonlythefactory-installed
memories,andthenreinstallthememoryoneatatimetoensureaproperconnection.Forthe
procedurestoremoveandreinstallamemory,referto“Replacingmemory”onpage123.
2.Checkforerrormessagesduringstartup.
FollowtheappropriatecorrectiveactionsforPower-onself-test(POST).See“Errormessages”on
page203.
3.VerifythatthelatestsystemBIOS(UEFBIOS)foryourmodelhasbeeninstalled.
4.Verifythepropermemorycongurationandcompatibilityincludingthemaximummemorysizeandthe
memoryspeed.
Fordetails,refertotheinstructionsin“Replacingmemory”onpage123.
5.Runadiagnostictest.See“Diagnosingproblems”onpage201
Modemandnetworking
Thefollowingarethemostcommonmodemandnetworkingproblems:

Modemproblems

•Problem:Yourmodemapplicationdoesnotworkwiththebuilt-inmodem.
Solution:MakesurethattheinternalmodemportisenabledbyopeningtheDeviceManageranddoing
asfollows:
ForWindows7andWindowsVista:
1.ClickStart.
2.ClickControlPanel➙HardwareandSound.
3.ClickDeviceManager.Ifyouarepromptedforanadministratorpasswordorconrmation,typethe
passwordorprovideconrmation.
4.Double-clickModems.
5.Right-clickthedevice,andclickEnable.
ForWindowsXP:
1.ClickStart➙ControlPanel.
2.ClickPerformanceandMaintenance,andthenclickSystem.
3.ClicktheHardwaretab,andthenclicktheDeviceManagerbutton.
4.Double-clickModems.
5.Right-clickthedevice,andclickEnable.
Ifthemodemworkscorrectly,setthefollowingmodemsettingsbydoingthefollowing:
ForWindows7andWindowsVista:
1.ClickStart.
2.ClickControlPanel➙HardwareandSound.
3.ClickPhoneandModemOptions.
4.ClicktheModemstab.Thenameofthemodeminstalledinyourcomputerishighlighted.
Chapter10.T roubleshootingcomputerproblems207