Lenovo ThinkCentre Edge 91 - Chapter 11. Additional Service Information; Security Features; Hardware-Controlled Passwords; Operating System Password

Chapter11.Additionalserviceinformation
Thischapterprovidesadditionalinformationthattheservicerepresentativemightndhelpful.
Securityfeatures
Securityfeaturesinthissectionincludethefollowing:
•Passwords
•VitalProductData
Hardware-controlledpasswords
UsetheSetupUtilityprogramtosetthehardwarecontrolledpasswords.Formoreinformationabout
passwords,see“Usingpasswords”onpage43
.
Operatingsystempassword
Note:ThissectionappliesonlytocomputermodelsthathaveanoperatingsystempreinstalledfromLenovo.
Anoperatingsystempasswordisverysimilartoapower-onpasswordanddeniesaccesstothecomputerby
anunauthorizeduserwhenthepasswordisactivated.Thecomputerisunusableuntilthecorrectpassword
isenteredandrecognizedbythecomputer.
VitalProductData
EachcomputerhasauniqueVitalProductData(VPD)codestoredinthenonvolatilememoryonthesystem
board.Afteryoureplacethesystemboard,theVPDmustbeupdated.ToupdatetheVPD,see“Updating
(ashing)theBIOSfromadisc”onpage249.
BIOSlevels
AnincorrectlevelofBIOScancausefalseerrorsandunnecessaryFRUreplacement.Usethefollowing
informationtodeterminethecurrentlevelofBIOSinstalledinthecomputer,thelatestBIOSavailableforthe
computer,andwheretoobtainthelatestlevelofBIOS.
•TodeterminethecurrentlevelofBIOS:
–StarttheSetupUtilityprogram.
–SeeBIOSRevisionLevelontheMainsetupscreen.
•SourcesforobtainingthelatestlevelBIOSavailable
1.Lenovosupportwebsite:
http://www.lenovo.com/support
2.LenovoCustomerSupportCenter
3.Levels1and2Support
Toupdate(ash)theBIOS,see“Updating(ashing)theBIOSfromadisc”onpage249.
Updating(ashing)theBIOSfromadisc
Thissectionprovidesinstructionsonhowtoupdate(ash)theBIOSfromadisc.
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