ThinkPad Edge E440 - Display and Multimedia Problems

3.SelecttheHardwaretab.IntheDevicePropertiespane,makesurethatyouseethismessage:
DeviceStatus:Thisdeviceisworkingproperly.
Ifkeysonthekeyboardstilldonotwork,havethecomputerserviced.
•Problem:Anumberisdisplayedwhenyoutypealetter.
Solution:Thenumericlockfunctionison.Todisableit,pressFn+NumLock.
•Problem:Allorsomekeysontheexternalnumerickeypaddonotwork.
Solution:Makesurethattheexternalnumerickeypadiscorrectlyconnectedtothecomputer.
Problemswiththedisplayandmultimediadevices
Thistopicincludesthemostcommonproblemswithdisplaysandmultimediadevices,includingthe
computerdisplay,theexternalmonitor,audiodevices,andtheopticaldrive.
Computerscreenproblems
•Problem:Thescreenisblank.
Solution:Dothefollowing:
–PressF7tobringuptheimage.
–Ifyouareusingtheacpoweradapter,orusingthebatteryandthebatterygaugeshowsthatthebattery
isnotdepleted,pressF6tomakethescreenbrighter.
–Ifyourcomputerisinsleepmode,pressFntoresumefromthesleepmode.
–Iftheproblempersists,followthesolutionforthefollowingproblem.
•Problem:Thescreenisunreadableordistorted.
Solution:Makesurethat:
–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
deviceisworkingcorrectly.Ifthedeviceisnotworkingcorrectly,clicktheTroubleshootbuttonand
followtheinstructionsonthescreen.
Note:Thedevicedrivernamedependsonthevideochipthathasbeeninstalledonyourcomputer.
5.ClicktheColourManagementtab,andthenclicktheColourManagementbutton.Inthedisplayed
ColourManagementwindow,clicktheAdvancedtabandensurethatthesettingsintheWindows
Chapter10.Troubleshootingcomputerproblems139