Lenovo E540 User's Guide download pdf (Page 156)

ColourSystemDefaultsareaaresetasdesired.Ifyouarepromptedforanadministratorpassword

orconﬁrmation,typethepasswordorprovideconﬁrmation.

•Problem:Incorrectcharactersaredisplayedonthescreen.

Solution:Didyouinstalltheoperatingsystemorprogramcorrectly?Iftheyareinstalledandconﬁgured

correctly,havethecomputerserviced.

•Problem:Thescreenstaysonevenafteryouturnoffyourcomputer.

Solution:Pressandholdthepowerbuttonforfoursecondsormoretoturnoffyourcomputer;then

turnitonagain.

•Problem:Missing,discolored,orbrightdotsappearonthescreeneverytimeyouturnonyourcomputer.

Solution:ThisisanintrinsiccharacteristicoftheTFTtechnology.Yourcomputerdisplaycontains

multiplethin-ﬁlmtransistors(TFTs).Asmallnumberofmissing,discolored,orbrightdotsonthescreen

mightexistallthetime.

Externalmonitorproblems

•Problem:Theexternalmonitorisblank.

Solution:Tobringuptheimage,pressF7andselectthedesiredmonitor.Iftheproblempersists,do

thefollowing:

1.Connecttheexternalmonitortoanothercomputertomakesurethatitworks.

2.Reconnecttheexternalmonitortoyourcomputer.

3.Refertothemanualshippedwiththeexternalmonitortochecktheresolutionsandrefreshratesthat

aresupported.

–Iftheexternalmonitorsupportsthesameresolutionasthecomputerdisplayorahigherresolution,

viewoutputontheexternalmonitororonboththeexternalmonitorandthecomputerdisplay.

–Iftheexternalmonitorsupportsalowerresolutionthanthecomputerdisplay,viewoutputonthe

externalmonitoronly.(Ifyouviewoutputonboththecomputerdisplayandtheexternalmonitor,

theexternalmonitorscreenwillbeblankordistorted.)

•Problem:Youcannotsetahigherresolutionthanthepresentoneonyourexternalmonitor.

Solution:Makesurethatthemonitorinformationiscorrect.Dothefollowing:

1.Right-clickonthedesktop,andclickScreenresolution.

Note:Ifyourcomputercannotdetecttheexternalmonitor,clicktheDetectbutton.

2.Clicktheiconforthedesiredmonitor(theMonitor-2iconisfortheexternalmonitor).

3.ClickAdvancedSettings.

4.ClicktheAdaptertab.

5.Makesurethatthecorrectdevicedrivernameisshownintheadapterinformationwindow.

Note:Thedevicedrivernamedependsonthevideochipthathasbeeninstalledonyourcomputer.

6.ClickOK.

Iftheinformationisincorrect,reinstallthedevicedriver.

–Checkthemonitortypeand,ifnecessary,updatethedriverbydoingthefollowing:

1.Connecttheexternalmonitortothemonitorconnector,andthenconnectthemonitortoan

electricaloutlet.

2.Turnontheexternalmonitorandthecomputer.

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Lenovo E540 User's Guide Page 156