SymptomAction
Theoperatingsystemdoesnot
start.
Verifythat:
•Thestartupsequenceincludesthedevicewheretheoperatingsystemresides.
Usually,theoperatingsystemisontheharddiskdrive.F ormoreinformation,
see“Selectingastartupdevice”onpage80.
Note:ForSMCcomputers,youmightreceivetheerrormessage“Nooperating
systemfound.PressF1torepeatbootsequence.”Inthiscase,press
Ctrl+Alt+DeleteinsteadofF1toestablishaconnectiontothestorageareanetwork
whereyouroperatingsystemisstored.Verifythattheusernameisnotlogged
oninanotherlocation.
TheSMCloginprompt
disappearsbeforeyoulog
onandthenablackscreen
displays(forSMCcomputers
only).
Verifythatyourcomputerdoesnotturnoffduetoinactivity.SMCwillautomatically
turnoffaninactivecomputer.Ifyourcomputerturnsoffautomatically,turnonthe
computerandlogon.Contactyouradministratorifyoucannotcorrecttheproblem.
Thecomputerbeepsmultiple
timesbeforetheoperating
systemstarts.
Verifythatnokeysar estuck.
Troubleshootingprocedure
Usethefollowingprocedureasastartingpointfordiagnosingpr oblemsyouareexperiencingwithyour
computer:
1.Verifythatthecablesforallattacheddevicesareconnectedcorrectlyandsecurely.
2.Verifythatallattacheddevicesthatrequir eacpowerareconnectedtoproperlygrounded,functioning
electricaloutlets.
3.VerifythatallattacheddevicesareenabledintheBIOSsettingsofyourcomputer.Formoreinformation
aboutaccessingandchangingtheBIOSsettings,r efertoyourChapter7“UsingtheSetupUtility
program”onpage77.
4.Gotothe“T roubleshooting”onpage93andfollowtheinstructionsforthetypeofproblemyouare
experiencing.IftheTroubleshootinginformationdoesnothelpyouresolveaproblem,continuewiththe
nextstep.
5.T ryusingapreviouslycapturedcongurationtoseeifarecentchangetohardwareorsoftwaresettings
hascausedaproblem.Beforerestoringapr eviousconguration,Captureyourcurrentcongurationin
casetheoldercongurationsettingsdonotsolvetheproblemorhaveadverseaffects.T orestorea
capturedconguration,dothefollowing:
•OntheWindowsVistaoperatingsystem,clickS tart➙ControlPanel➙SystemandMaintenance
➙System➙SystemProtection➙SystemRestore.
•OntheWindows7operatingsystem,clickStart➙ControlPanel➙SystemandSecurity➙
System➙SystemProtection➙SystemRestore.
Ifthisdoesnotcorrecttheproblem,continuewiththene xtstep.
6.Runthediagnosticprograms.See“Diagnosticprograms”onpage109formor einformation.
•Ifthediagnosticprogramsdetectahardwarefailure,contacttheL enovoCustomerSupportCenter.
SeeChapter11“Gettinginformation,help,andservice”onpage111formoreinformation.
•Ifyouareunabletorunthediagnosticprograms,contacttheLenovoCustomerSupportCent er.See
Chapter11“Gettinginformation,help,andservice”onpage111formoreinformation.
•Ifthediagnosticprogramsdonotdetectahar dwarefailure,continuewiththenextstep.
7.Useanantivirusprogramtoseeifyourcomputerhasbeeninfectedbyavirus.Iftheprogramdetectsa
virus,removethevirus.
92ThinkCentreUserGuide