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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