SymptomAction
TheUSBorPS/2mousedoes
notwork.
Verifythat:
•Thecomputeristurnedon.
•Themouseiscorrectlyconnectedtoanappropriatemouseconnector(thePS/2
mouseconnectororoneoftheUSBconnectors)onthecomputer.
•Themouseisclean.Referto“Cleaninganopticalmouse”onpage29.
Thewirelesskeyboardormouse
doesnotwork.
Verifythat:
•Thecomputeristurnedon.
•Thebatteryorbatteriesinstalledinthewirelesskeyboardormouseareingood
condition.
•Thewirelesscongurationsareallsetcorrectly.Youmightneedtoreferto
thedocumentationthatcomewiththewirelesskeyboardormouse,orr efer
toyourWindowsHelpandSupportinformationsystemforwirelessrelated
instructions.Ifyourwirelessmousehasadongle,makesurethedongleis
correctlyconnectedtooneoftheUSBconnectorsonthecomputer.
•Forthewirelesskeyboard,nokeysarestuck.
•Thewirelessmouseisclean.
Theoperatingsystemdoesnot
start.
Verifythatyoulistthedevicewheretheoperatingsystemresidesinthestartup
devicesequence.Usually,theoperatingsystemisontheharddiskdrive.Formore
information,see“Selectingastartupdevice”onpage23.
Thecomputerbeepsmultiple
timesbeforetheoperating
systemstarts.
Verifythatnokeysarestuck.
Diagnosticprograms
Diagnosticprogr amsar eusedtotesthardwarecomponentsofyourcomputer.Diagnosticprogramscan
alsor eportoperating-system-controlledsettingsthatint erferewiththecorrectoperationofyoursystem.You
canusethepreinstalledLenovoThinkVantageToolboxprogramtodiagnosecomputerproblems,ifyour
computerisrunningtheWindowsoperatingsystem.
Notes:
1.Y oucanalsodownloadthePC-DoctorforDOSdiagnosticprogramfromhttp://www.lenovo.com/support.
See“PC-DoctorforDOS”onpage29fordetailedinformation.
2.Ifyouareunabletoisolateandrepairtheproblemyourselfafterrunningtheprogr ams,saveandprint
theloglescreatedbytheprograms.Y ouwillneedthelogleswhenyouspeaktoaLenovot echnical
supportrepresentative.
LenovoThinkVantageT oolbox
TheL enovoThinkVantageToolboxprogramhelpsyoumaintainyourcomputer,improvecomputingsecurity,
diagnosecomputerproblems,getfamiliarwiththeinnovativetechnologiesprovidedbyL enovo,andget
28ThinkCentreUserGuide