User's Manual

Table Of Contents
1.Turnoffthecomputer.
2.Removetheexternalnumerickeypad.
3.Turnonthecomputerandtryusingthekeyboardagain.
Ifthekeyboardproblemisresolved,carefullyreconnecttheexternalnumerickeypadandtheexternal
keyboard.Makesurethatyouhaveseatedtheconnectorscorrectly.
Iftheproblempersists,makesurethatthecorrectdevicedriverisinstalledbydoingthefollowing:
1.OpenControlPanel.ChangetheviewofControlPanelfromCategorytoLargeiconsorSmallicons.
2.ClickKeyboard.
3.SelecttheHardwaretab.IntheDevicePropertiespane,makesurethatyouseethismessage:
DeviceStatus:Thisdeviceisworkingproperly.
Ifkeysonthekeyboardstilldonotwork,havethecomputerserviced.
Problem:Allorsomekeysontheexternalnumerickeypaddonotwork.
Solution:Makesurethattheexternalnumerickeypadiscorrectlyconnectedtothecomputer.
Problemswiththedisplayandmultimediadevices
Thistopicincludesthemostcommonproblemswithdisplaysandmultimediadevices,includingthe
computerdisplay,theexternalmonitor,audiodevices,andtheopticaldrive.
Computerscreenproblems
Problem:Thescreenisblank.
Solution:Dothefollowing:
Pressthedisplay-modeswitchingkeytobringuptheimage.
Ifyouareusingtheacpoweradapter,orusingthebatteriesandthebattery-statusiconshowsthatthe
batteriesarenotdepleted,pressthebrightness-upkey
tomakethescreenbrighter.
Ifyourcomputerisinsleepmode,presspowerbuttontoresumefromthesleepmode.
Iftheproblempersists,followthesolutionforthefollowingproblem.
Problem:Thescreenisunreadableordistorted.
Solution:Makesurethat:
Thedisplaydevicedriverisinstalledcorrectly.
Thescreenresolutionandcolorqualityarecorrectlyset.
Themonitortypeiscorrect.
Tocheckthesesettings,dothefollowing:
1.Right-clickonthedesktopanddothefollowing:
ForWindows7:ClickScreenresolution.
ForWindows10:ClickDisplaysettings.Showthedisplayedwindowinfullscreen.Thenclick
Advanceddisplaysettings.
Note:Ifyourcomputercannotdetecttheexternalmonitor,clicktheDetectbutton.
2.SelecttheexternalmonitorandsetResolution.
3.Dothefollowing:
ForWindows7:ClickAdvancedsettings.
ForWindows10:ClickDisplayadapterproperties.
Chapter8.Troubleshootingcomputerproblems99