3.Turnonthecomputerandtryusingthekeyboardagain.
Ifthekeyboardproblemisresolved,carefullyreconnecttheexternalnumerickeypadandtheexternal
keyboard.Ensurethatyouhaveseatedtheconnectorscorrectly.
Iftheproblempersists,ensurethatthecorrectdevicedriverisinstalledbydoingthefollowing:
1.OpenControlPanel.ChangetheviewofControlPanelfromCategorytoLargeiconsorSmallicons.
2.ClickKeyboard.
3.SelecttheHardwaretab.IntheDevicePropertiespane,ensurethatyouseethismessage:Device
Status:Thisdeviceisworkingproperly.
Ifkeysonthekeyboardstilldonotwork,havethecomputerserviced.
•Problem:Allorsomekeysontheexternalnumerickeypaddonotwork.
Solution:Ensurethattheexternalnumerickeypadiscorrectlyconnectedtothecomputer.
Problemswiththedisplayandmultimediadevices
Thistopicincludesthemostcommonproblemswithdisplaysandmultimediadevices,includingthe
computerdisplay,theexternalmonitor,andaudiodevices.
Computerscreenproblems
•Problem:Thescreenisblank.
Solution:Dothefollowing:
–Pressthedisplaymode-switchingkeytobringuptheimage.
–Ifyouareusingtheacpoweradapter,orusingthebatteryandthebatterygaugeshowsthatthebattery
isnotdepleted,pressthebrightness-upkeytomakethescreenbrighter.
–Ifyourcomputerisinsleepmode,pressFntoresumefromthesleepmode.
–Iftheproblempersists,followthesolutionforthefollowingproblem.
•Problem:Thescreenisunreadableordistorted.
Solution:Ensurethat:
–Thedisplaydevicedriverisinstalledcorrectly.
–Thescreenresolutionandcolorqualityarecorrectlyset.
–Themonitortypeiscorrect.
Tocheckthesesettings,dothefollowing:
1.Right-clickanywhereonthedesktop,andclickScreenresolution.
2.ClickAdvancedSettings.
3.ClicktheAdaptertabtoensurethatthecorrectdevicedrivernameisshownintheAdapter
Informationwindow.ThenclickthePropertiesbutton.Ifyouarepromptedforanadministrator
passwordorconfirmation,typethepasswordorprovideconfirmation.ChecktheDevicestatusbox
andmakesurethatthedeviceisworkingcorrectly.Ifthedeviceisnotworkingcorrectly,clickthe
Troubleshootbuttonandfollowtheinstructionsonthescreen.
Note:Thedevicedrivernamedependsonthevideochipthathasbeeninstalledonyourcomputer.
4.ClicktheMonitortabtoensurethatthecorrectmonitortypeisshownintheMonitorTypewindow.
ThenclickthePropertiesbutton.Ifyouarepromptedforanadministratorpasswordorconfirmation,
typethepasswordorprovideconfirmation.ChecktheDevicestatusboxandmakesurethatthe
90UserGuide