Hewlett-Packard 2230s - Compaq Business Notebook Manuallines

Download Manuallines of HP EliteBook 8530w Laptop, Laptop Accessories for Free or View it Online on All-Guides.com. This version of HP EliteBook 8530w Manual compatible with such list of devices, as: 2730p - EliteBook - Core 2 Duo 1.86 GHz, 4310s - ProBook - Core 2 Duo 2.1 GHz, 6530b - Compaq Business Notebook, 6535s - Notebook PC, Compaq 6730s

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7
6. How Preboot BIOS Implements the Password Filter And
Handles Dead Keys
TheHPBIOSimplementsasecondlevelpasswordfiltertofurtherpreventthe
lock‐outsituation.
HPBIOSPrebootandHPDriveEncryptioncontainthekeyboardmappingsfor
allthesupportedkeyboardslistedabove.WhenauserissettingupPreboot
SecuritywiththeBIOSPrebootorDriveEncryptionlevelsenabled,orwhena
userchangeshis/herpassword,theBIOSPrebootandDriveEncryption
receivestheUnicodepasswordfromtheOS.TheBIOSisresponsibleto
guaranteethatthekeyboardbeingassociatedwiththatuserisabletotypethe
password.Otherwise,theBIOSwillrejectthepassword.However,therestill
maybeaninstancewheretheuserchangesthekeyboardinWindowswithout
theBIOS’sknowledgeorwhentheuserisnotawareofthekeyboardlayout
currentlyinuse.Tocompensateforthesituationwheretheusermaynotbe
abletophysicallytypetheirpasswordduetothesetwosituations,theBIOSwill
automaticallyprovidetheusertheabilityto“click”outher/hispasswordafter
failingwiththephysicalkeyboard.Thisisdonebyshowingeverycharacteron
thescreenthatcouldbetypedwiththekeyboardcurrentlyassociatedwiththe
user,eachofthemasbuttonsandwhichcanbeclickedwiththemousetoform
thepassword.Thismethodprovidesawayfortheusertoenterthepassword
withoutthephysicalkeyboard.
(Pleasenote:Whenusingthe“OnScreenKeyboard”intheBIOS,therearemanycharactersshownandsomecharacters
maylookverysimilartoothersonsomekeyboards.Ifexperiencingtroubleusingthisfeature,sopleaselookatallof
thecharactersbeforeclickingoutyourpasswordtoensureyouareenteringthecorrectcharacters.)
IntheBIOS,theuseofDeadKeyshasalsobeenaddedtotrytoprovidetheuser
withasmuchkeyboardfunctionalityaspossible.Ifforsomereasonacertain
characterisproducedontheOSlevelthatcannotbetypedintheBIOS,thiswill
causethepasswordchangetoberejected.Unlessrejected,theusershouldfeel
safeandconfidentinusingDeadKeysforpasswordsassociatedwiththe
PrebootSecurityfeature.
ThisabilityofthePrebootSecurityhingesonitsabilitytoensurethatthe
WindowspasswordcanalwaysbeenteredinthePrebootBIOSandDrive
Encryption,andthereforeallcharactersthatrequirespecialtypingmethods
thatarenotcommontoallkeyboards,suchastheuseoftheKanakeyortheuse
ofIMEfunctionofWindows,willresultinthepasswordchangebeingrejected
fromtheBIOS,astheBIOSdoesnotcontaintheseadvancedtypingfeatures.