Lenovo H520e Desktop User Manual Page 101

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Chapter11.Additionalserviceinformation
Thischapterprovidesadditionalinformationthattheservicerepresentativemightfindhelpful.
Securityfeatures
Securityfeaturesinthissectionincludethefollowing:
Passwords
VitalProductData
Hardware-controlledpasswords
UsetheSetupUtilityprogramtosetthehardwarecontrolledpasswords.Formoreinformationabout
passwords,see“Usingpasswords”onpage53.
Operatingsystempassword
Note:ThissectionappliesonlytocomputermodelsthathaveanoperatingsystempreinstalledfromLenovo.
Anoperatingsystempasswordisverysimilartoapower-onpasswordanddeniesaccesstothecomputerby
anunauthorizeduserwhenthepasswordisactivated.Thecomputerisunusableuntilthecorrectpassword
isenteredandrecognizedbythecomputer.
VitalProductData
EachcomputerhasauniqueVitalProductData(VPD)codestoredinthenonvolatilememoryonthesystem
board.Afteryoureplacethesystemboard,theVPDmustbeupdated.ToupdatetheVPD,see“Flash
updateprocedures”onpage97
.
BIOSlevels
AnincorrectlevelofBIOScancausefalseerrorsandunnecessaryFRUreplacement.Usethefollowing
informationtodeterminethecurrentlevelofBIOSinstalledinthecomputer,thelatestBIOSavailableforthe
computer,andwheretoobtainthelatestlevelofBIOS.
TodeterminethecurrentLevelofBIOS:
StarttheSetupUtility.
SelectStandardCMOSFeatures.
SourcesforobtainingthelatestlevelBIOSavailable
1.Lenovosupportwebsite:http://www.lenovo.com/support/
2.LenovoCustomerSupportCenter
3.Levels1and2Support
Toupdate(flash)theBIOS,see“Flashupdateprocedures”onpage97.
Note:BIOSsettingsvarybyoperatingsystem.ChangetheBIOSsettingsbeforeinstallinganewoperating
system.See“ChangingtheBIOSsettingsbeforeinstallinganewoperatingsystem”onpage57.
Flashupdateprocedures
Thissectiondetailshowtoflash(update)theBIOS.
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