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Chapter6.Troubleshootinganddiagnosticprograms
Thischapterprovidesinformationaboutsomebasictroubleshootinganddiagnosticprograms.Ifyour
computerproblemisnotdescribedinthischapter,seeChapter7“Gettinginformation,help,andservice”on
page67
foradditionaltroubleshootingresources.
Thischaptercontainsthefollowingtopics:
“Basictroubleshooting”onpage63
“Diagnosticprograms”onpage64
“Cleaninganopticalmouse”onpage65
Basictroubleshooting
Thefollowingtableprovidessomebasicinformationtohelpyoutroubleshootyourcomputerproblems.
Note:Ifyoucannotsolvetheproblemafterdoingthebasictroubleshooting,havethecomputerserviced.
RefertotheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputerforthesafetyand
warrantyinformationandthelistofserviceandsupporttelephonenumbers.Youcanalsogetthelatest
serviceandsupporttelephonenumbersandaPDFversionoftheThinkCentreSafetyandWarrantyGuide
fromtheLenovoSupportWebsiteat:
http://www.lenovo.com/support
SymptomAction
Thecomputerdoesnotstart
whenyoupressthepower
switch.
Verifythat:
Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.
Thepowerindicatoronthefrontofthecomputerison.
Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
Themonitorscreenisblank.
Verifythat:
Themonitorsignalcableiscorrectlyconnectedtothemonitorandtothe
appropriatemonitorconnectoronthecomputer.IfyourcomputerhasaPCI
graphicscardinstalled,besuretousethemonitorconnectoronthegraphics
cardratherthantheintegratedoneonthesystemboard.
Themonitorpowercordiscorrectlyconnectedtothemonitorandtoaworking
electricaloutlet.
Themonitoristurnedonandthebrightnessandcontrastcontrolsareset
correctly.
Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
Thekeyboarddoesnotwork.
Verifythat:
Thecomputeristurnedon.
Thekeyboardiscorrectlyconnectedtoanappropriatekeyboardconnector(the
PS/2keyboardconnectororoneoftheUSBconnectors)onthecomputer.
Nokeysarestuck.
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