User guide

SymptomAction
Theoperatingsystemdoesnot
start.
Verifythat:
•Thestartupsequenceincludesthedevicewheretheoperatingsystemresides.
Usually,theoperatingsystemisontheharddiskdrive.Formoreinformation,
see“Selectingastartupdevice”onpage100
.
Thecomputerbeepsmultiple
timesbeforetheoperating
systemstarts.
Verifythatnokeysarestuck.
Troubleshootingprocedure
Usethefollowingprocedureasastartingpointfordiagnosingproblemsyouareexperiencingwithyour
computer:
1.Verifythatthecablesforallattacheddevicesareconnectedcorrectlyandsecurely.
2.Verifythatallattacheddevicesthatrequireacpowerareconnectedtoproperlygrounded,functioning
electricaloutlets.
3.VerifythatallattacheddevicesareenabledintheBIOSsettingsofyourcomputer.Formoreinformation
aboutaccessingandchangingtheBIOSsettings,refertoyourChapter7“UsingtheSetupUtility
program”onpage97.
4.Gotothe“Troubleshooting”onpage110andfollowtheinstructionsforthetypeofproblemyouare
experiencing.IftheTroubleshootinginformationdoesnothelpyouresolveaproblem,continuewiththe
nextstep.
5.Tryusingapreviouslycapturedcongurationtoseeifarecentchangetohardwareorsoftwaresettings
hascausedaproblem.Beforerestoringapreviousconguration,captureyourcurrentcongurationin
casetheoldercongurationsettingsdonotsolvetheproblemorhaveadverseaffects.Torestorea
capturedconguration,clickStart➙ControlPanel➙SystemandSecurity➙System➙System
Protection➙SystemRestore.Ifthisdoesnotcorrecttheproblem,continuewiththenextstep.
6.Runthediagnosticprogram.See“LenovoSolutionCenter”onpage125formoreinformation.
•Ifthediagnosticprogramdetectsahardwarefailure,contacttheLenovoCustomerSupportCenter.
SeeChapter11“Gettinginformation,help,andservice”onpage127
formoreinformation.
•Ifyouareunabletorunthediagnosticprogram,contacttheLenovoCustomerSupportCenter.See
Chapter11“Gettinginformation,help,andservice”onpage127formoreinformation.
•Ifthediagnosticprogramdoesnotdetectahardwarefailure,continuewiththenextstep.
7.Useanantivirusprogramtoseeifyourcomputerhasbeeninfectedbyavirus.Iftheprogramdetectsa
virus,removethevirus.
8.Ifnoneoftheseactionssolvetheproblem,seektechnicalassistance.SeeChapter11“Getting
information,help,andservice”onpage127formoreinformation.
Troubleshooting
Usethetroubleshootinginformationtondsolutionstoproblemsthathavedenitesymptoms.
Ifthesymptomyourcomputerisexperiencingoccurredimmediatelyafteryouinstalledanewhardware
optionornewsoftware,dothefollowingbeforereferringtothetroubleshootinginformation:
1.Removethenewhardwareoptionorsoftware.Ifyoumustremovethecomputercovertoremovea
hardwareoption,ensurethatyoureviewandfollowtheelectricalsafetyinformationprovidedwithyour
computer.Foryoursafety,donotoperatethecomputerwiththecoverremoved.
2.Runthediagnosticprogramtoensurethatyourcomputerisoperatingcorrectly.
3.Reinstallthenewhardwareoptionorsoftwarefollowingthemanufacturer'sinstructions.
110ThinkCentreUserGuide