ThinkPad T420 - Supervisor Password; How to Remove the Power-On Password; How to Remove the Hard-Disk Password

Attention:IftheuserHDPhasbeenforgotten,checkwhetheramasterHDPhasbeenset.Ifithas,itcanbe
usedforaccesstotheharddiskdrive.IfnomasterHDPisavailable,neitherLenovonorLenovoauthorized
servicetechniciansprovideanyservicestoreseteithertheuserorthemasterHDP ,ortorecoverdatafrom
theharddiskdrive.Theharddiskdrivecanbereplacedforascheduledfee.
ForhowtoremovethePOP ,see“Howtoremovethehard-diskpassword”onpage43.
Supervisorpassword
Asupervisorpassword(SVP)protectsthesysteminformationstoredintheThinkPadSetupprogram.
TheusermustentertheSVPinordertogetaccesstotheThinkPadSetupprogramandchangethe
systemconguration.
Attention:IftheSVPhasbeenforgottenandcannotbemadeavailabletotheservicetechnician,thereisno
serviceproceduretoresetthepassword.Thesystemboardmustbereplacedforascheduledfee.
Howtoremovethepower-onpassword
ToremoveaPOPthatyouhaveforgotten,dothefollowing:
(A)IfnoSVPhasbeenset:
1.Turnoffthecomputer.
2.Removethebatterypack.Forhowtoremovethebatterypack,see“1010Batterypack”onpage67.
3.Removethebackupbattery.Forhowtoremovethebackupbattery,see“1100Backupbattery”on
page83.
4.TurnonthecomputerandwaituntilthePOSTends.AfterthePOSTends,thepasswordpromptdoes
notappear.ThePOPhasbeenremoved.
5.Reinstallthebackupbatteryandthebatterypack.
(B)IfanSVPhasbeensetandisknownbytheservicetechnician:
1.Turnonthecomputer.
2.WhentheThinkPadlogocomesup,immediatelypressF1toentertheThinkPadSetupprogram.When
thePOPiconisdisplayedonthescreen,enterthePOP.
3.SelectSecurity,usingthecursordirectionalkeystomovethemenu.
4.SelectPassword.
5.SelectPower-OnPassword.
6.TypethecurrentSVPintheEnterCurrentPasswordeld.thenleavetheEnterNewPasswordeld
blank,andpressEntertwice.
7.IntheChangeshavebeensavedwindow,pressEnter.
8.PressF10;then,intheSetupconrmationwindow,selectYes.
Howtoremovethehard-diskpassword
Attention:IfUseronlymodeisselectedandtheuserHDPhasbeenforgottenandcannotbemade
availabletotheservicetechnician,neitherLenovonorLenovoauthorizedservicetechniciansprovideany
servicestoresettheuserHDPsortorecoverdatafromtheharddiskdrive.Theharddiskdrivecanbe
replacedforascheduledfee.
ToremoveauserHDPthathasbeenforgotten,whentheSVPandthemasterHDPareknown,dothe
following:
1.Turnonthecomputer.
Chapter4.Relatedserviceinformation43
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