
•Problem:Allorsomekeysontheexternalnumerickeypaddonotwork.
Solution:Makesurethattheexternalnumerickeypadiscorrectlyconnectedtothecomputer.
Displayandmultimediadevices
ThissectionincludesthemostcommondisplayandmultimediadevicesproblemswhichareComputer
screen,Externalmonitor,andAudio.Checkthesetopicstolearnmoreinformation.
Computerscreenproblems
•Problem:Thescreenisblank.
Solution:Dothefollowing:
–PressFn+F7tobringuptheimage.
Note:IfyouusetheFn+F7keytoapplyapresentationscheme,pressFn+F7atleastthreetimesin
threeseconds,andtheimageisdisplayedonthecomputerscreen.
–Ifyouareusingtheacpoweradapter,orusingthebatteryandthebatterystatusindicatorison(is
green),pressFn+F9tomakethescreenbrighter.
–Ifthesleep(standby)statusindicatorison(isgreen),pressFntoresumefromthesleep(standby)mode.
–Iftheproblempersists,dotheSolutionintheproblembelow.
Note:IfyourcomputerisaWindows7model,itdoesnotsupportthepresentationscheme.
•Problem:Thescreenisunreadableordistorted.
Solution:Makesurethat:
–Thedisplaydevicedriverisinstalledcorrectly.
–Thescreenresolutionandcolorqualityarecorrectlyset.
–Themonitortypeiscorrect.
Tocheckthesesettings,doasfollows:
ForWindows7:
1.Right-clickonthedesktop,andclickPersonalize.
2.ClickDisplayattheleft.
3.SelectChangedisplaysettings.Checkwhetherthescreenresolutioniscorrectlyset.
4.ClickAdvancedSettings.
5.ClicktheAdaptertab.
6.Makesurethatthecorrectdevicedrivernameisshownintheadapterinformationwindow.
Note:Thedevicedrivernamedependsonthevideochipthathasbeeninstalledonyourcomputer.
7.ClickthePropertiesbutton.Ifyouarepromptedforanadministratorpasswordorconrmation,type
thepasswordorprovideconrmation.Checkthe“Devicestatus”boxandmakesurethedeviceis
workingproperly.Ifnot,clicktheTroubleshootbutton.ClosethePropertieswindow.
8.ClicktheMonitortab.Checkwhetherthecolorqualityiscorrectlyset,makesureotherinformation
isalsocorrect.
9.ClickthePropertiesbutton.Ifyouarepromptedforanadministratorpasswordorconrmation,type
thepasswordorprovideconrmation.Checkthe“Devicestatus”boxandmakesurethedeviceis
workingproperly.Ifnot,clicktheTroubleshootbutton.
ForWindowsXP:
142UserGuide
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