Lenovo ThinkPad Edge E520 - Computer stops responding

•LockUEFISettings
•SetMinimumLength
•Passwordatunattendedboot
•Passwordatrestart
•Power-OnPassword
•HardDiskxPassword
Notes:
•HardDisk1meanstheharddiskdrivebuiltintoyourcomputer.
LockUEFISettingsenablesordisablesthefunctionthatprotectsitemsintheThinkPadSetupfrombeing
changedbyauserwhodoesnothavethesupervisorpassword.Bydefault,thisissettoEnabled.If
yousetthesupervisorpasswordandenablethisfunction,noonebutyoucanchangeanyitemsinthe
ThinkPadSetup.
IfyouselectSetMinimumLength,youcanspecifyaminimumlengthforpower-onpasswordsandhard
diskpasswords.Bydefault,thisissettoDisabled.Ifyousetthesupervisorpasswordandspecifya
minimumlengthforpasswords,noonebutyoucanchangethelength.
IfyouselectandenablePasswordatunattendedboot,apasswordpromptisdisplayedwhenthecomputer
isturnedon,fromeitherapower-offstateorhibernation.IfyouselectDisabled,nopasswordpromptis
displayed;thecomputergoesaheadandloadstheoperatingsystem.Topreventunauthorizedaccess,set
theuserauthenticationontheoperatingsystem.
IfyouselectandenablePasswordatrestart,apasswordpromptisdisplayedwhenyourestartthe
computer.IfyouselectDisabled,nopasswordpromptisdisplayed;thecomputergoesaheadandloadsthe
operatingsystem.Topreventunauthorizedaccess,settheuserauthenticationontheoperatingsystem.
Startupmenu
Youmayneedtochangethestartupsequenceofyourcomputer.Forexample,ifyouhavedifferentoperating
systemsondifferentdevices,youcanhavethesystemstartupfromeitherofthem.
Attention:Afteryouchangeyourstartupsequence,youmustbeextremelycarefulnottospecifyawrong
deviceduringacopy,asave,oraformatoperation.Ifyouspecifyawrongdevice,yourdataandprograms
mightbeerasedoroverwritten.
Attention:IfyouareusingtheBitLocker
®
driveencryption,youshouldnotchangethestartupsequence.
BitLockerdriveencryptiondetectsthechangeofstartupsequenceandlocksthecomputerfrombooting.
Changingthestartupsequence
SelectingStartuptodisplaytheBootsubmenu.
Tochangethestartupsequence,dothefollowing:
1.SelectBoot;thenpressEnter.
YoucanusetheBootsubmenutospecifythestartupsequencethatrunswhenyouturnonthepower.
Referto“Bootsubmenu”onpage116.
2.Selectthedeviceyouwanttostartrst.
3.PressF10tosavethechangesandrestartthesystem.
Tochangethestartupsequencetemporarilysothatthesystemstartsupfromadifferentdrive,dothe
following:
Chapter8.Advancedconguration115