忘记windows xp登入密码的种解决办法 solutions to forget Windows XP login password.docx

忘记windows xp登入密码的种解决办法 solutions to forget Windows XP login password.docx

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忘记windowsxp登入密码的种解决办法solutionstoforgetWindowsXPloginpassword

忘记windowsxp登入密码的9种解决办法（9solutionstoforgetWindowsXPloginpassword）

9solutionstoforgetWindowsXPloginpassword

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Firstpropose:

Ifyouareaveryeasilyforgotten,sodon'tforgettocreateastartupdisktorestoreWindowsXPaccountpasswordinthepasswordthefirsttimeatthesametime,itcanletyouavoidharddisktrouble.

Fromthe"controlpanel"foundinthe"useraccount",selecttheirownaccountaccesscontrolinterfaceasshowninthefigure,wecanseea"stopaforgottenpassword"ontheleftsideofthetasklist,clickthe"forgotpasswordcanopenthewizard,thewizardwillbepromptedtoinsertaformattedablankdisk,intheprocessofoperationwillletyouentertheaccountpassword,canquicklycreateapasswordresetdisk.

Later,whenweforgetwhentheaccountpassword,withouttheuseof"Welcomescreen"logincaselogintotheWindowsXP,pressCtrl+Alt+Delkeycombination,"Windows"window,clicktheoptionsinthe"changepassword"button,thewindowappearstochangethepassword.Inthiswindow,backupthecurrentuser'spassword,clickthe"backup"buttoninthelowerleftcorner,activatethe"forgotpasswordWizard",andcreateapasswordresetdiskaccordingtothehint.

IfthewrongpasswordhasbeenenteredintheWindowsXPloginwindowwillpop-up"loginfailed"window,ifyoudowhatisnotuptoyourownpassword,youcanclickthe"reset"buttontostartthepasswordresetwizard,byjustcreatingapasswordresetdisk,youcanusethispasswordchangethepasswordresetdiskandbootthesystem.ResetyourpasswordandlogintoWindowsXP.

"Createapasswordresetdisk",containingacertainrisk,becauseanyonecanusethisapasswordresetdisktologinWindowsXP,canentertheuseraccountinthenameoftheuser,theusercanoperatealltherealoperation,itmustbe"passwordresetdisk"keepinplace,topreventlossorleakage.

Method1-usethe"Administrator"（thismethodappliestotheadministratorusernameandnottheadministrator）

WeknowthattheinstallationofWindowsXPprocess,thefirstisthe"Administrator"defaultlogin,thencreateanewaccounttoenterWindowsXPusingthisnewaccountlogin,butalsointheWindowsXPloginscreenwillonlyappearintheuseraccountcreation,nota"Administrator",butinfactthe"Administrator"accountstillexists,andthepasswordisempty.

Whenweunderstandthis,ifyouforgetthepassword,theloginscreen,holddowntheCtrl+Altkey,andthenpresstheDelbuttontwotimes,canappeartheclassicloginscreen,thentypetheusername"Administrator",enterthepasswordisempty,andthenmodifythepassword"zhangbp".

Method2-deletetheSAMfile（notethatthismethodappliesonlytoWIN2000）

WindowsNT/2000/XPinthesecuritymanagementoftheuseraccountusingasecurityaccountmanager（SecurityAccount,Manager,SAM）ofthemanagementmechanism,securityaccountmanageronaccountiscarriedoutthroughsafetysigns,safetysignsintheaccountcreationisalsocreated,oncetheaccountisdeleted,securityidentificationalsodeleted.Securityidentifiersareunique,evenifthesameusernameiscompletelydifferentfromeachotherwhentheyarecreated.Therefore,onceanaccountisrebuiltbytheusername,theaccountwillalsobegivendifferentsecuritylabelsandwillnotretaintheoriginalpermissions.Thespecificfeatureofthesecurityaccountmanageristhe%SystemRoot%system32configsamfile.TheSAMfileistheuseraccountdatabaseofWindowsNT/2000/XP,andalltheuser'sloginnamesandpasswordsarestoredinthisfile.

Knowingthis,oursolutionhasalsobeencreated:

deletingtheSAMfile,startingthesystem,anditwillrebuildaclean,cleanSAMwithnopasswordinside.

However,suchasimpleapproachisnotapplicableinXP,andMicrosoftmaybelimitedtoBUG......SonowintheXPsystem,evenifyoudeletetheSAM,orcannotdeletethepassword,butwillcausethesystemtostartinitializationerror,soastoenterthedeadloop,butcannotenterthesystem!

!

Method3-findthepasswordfromtheSAMfile（premise）......YoucanusetheDOSbasiccommand

Insertbootdiskbeforethesystemstarts,

Entry:

C:

WINNTSystem3ConfigcopiestheSAMfiletothefloppydiskusingtheCOPYcommand.Getanothermachinetoread.HerethetoolisLC4,runLC4,andopenanewtask,andthenclickIMPORTtoImportfromSAMfile"hastobecracked,opentheSAMfile,thenLC4willautomaticallyanalyzethefile,anddisplaysthefilename;clickthe"Session-BeginAudit",youcanstartcrackpassword.Ifthepasswordisnotverycomplicated,itwillgetresultsinaveryshorttime.

However,ifthepasswordiscomplex,itwilltakealongtime,andthenweneedtousethefollowingmethod.

Method4-overwritewithotherSAMfiles（providedyougettheSAMfileofanothercomputeranditspassword）......Personallythinkitisthemostfeasibleway

1-asmentionedabove,theSAMfileholdstheloginnameandpassword,sowesimplyreplacetheSAMfiletoreplacetheloginnameandpassword.However,the"origin"harddiskpartitionformatofthisreplacementSAMfileisthesameasforyoursystem（seeFAT32orNTFS,andyoucanconfirmityourself）.The"origin"ofthebestsystemthereisnopassword,securitysettingsdidnotmove（infact,mostofthepersonalcomputerarelikethis,ofcourse,moreinsurance）wayistoputallthefilesoftheXP[WinNTSystem32Config][C:

WinNTSystem32Config]tocoverthedirectoryinyourXPinstallation（assumingthedefaultpartitioninC:

）,

2,ifnottohelpotherpeople（Imean"if"）,youcanintheotherpartitionintheinstallationofaXPsystem,harddiskpartitionformattothesame,andpleasepayattentiontoyouroriginalXPandmustnotbeinstalledonthesamepartition!

Beforestarting,mustadvancethebackupbootMBR,therearemanymethodstobackupMBR,usingsoftwaretools,suchasantivirussoftware,suchasKV3000.InstalledafterlandingwithAdministrator,andnowyouhavetheoriginalXPabsolutewriteauthority,youcantaketheoriginalSAMdown,andgettheoriginalpasswordwith10PHTCRACK.CanalsoputallthefilesnewlyinstalledXPWinNTSystem32ConfigC:

WinNTSystemtocoverthe32Configdirectory（theoriginalXPerectioninstallationhere）,andthenuseKV3000torestorethepreviousandmasterbootMBR,youcanusetheAdministratoridentityonXPnow.

[2,IthinkI'mintrouble,orNo.1:

it'sbettertoasksomeoneforhelp......]

[inaddition,saidC:

windowsepairoftheSAMdirectoryistheoriginalversion,youcanuseittocovertheSAMsystem32,soyoucannowdeletethepassword,andreturningtothestartingwheninstallingthesystempassword.Ifthepasswordisempty,isn'tit?

......]

Method5-useWin2000toinstallCDbootrepairsystem（premise）......Obviously,youhavetohaveanWin2000installationCD

UsetheWin2000installationdisctostartthecomputerintheWndows2000installation,repairselectioninterfaceWindows2000（pressR）;then,choosetousefaultrepairconsole（pressC）,thesystemwillscanthecurrentversionoftheWindow2000/XP.Thereisonlyoneoperatingsystem,soonlyoneloginoption（l:

C:

\Windows）islisted.Fromthekeyboard,pressL,andthenenter,thistime,WindowXPdoesnotrequiretheinputoftheadministratorpassword,butdirectlyloggedintotherecoveryconsolemode（ifyouareusingaWindowsXPinstallationCD-ROMboot,theadministratorpasswordinputisrequired.Hereitreferstotheadministratorisasystemofthebuilt-inAdministraoraccount）familiarwithWindowsfriendsallknow,therecoveryconsolewhichcanbeanysystemleveloperations,suchascopy,move,deletefiles,startandstopservice,evenformatted,repartitionofdestructiveoperation.

Testusingcompactdisk:

integratedSP3Windows2000ProessionalsimplifiedChineseversion.

Thesystempassed:

Windows,XP,Proessional,SPI,Windows,XP（FAT32andNTFSfilesystemsarethesame）

[notethat,forvariousreasons,someoftheWindows2000installedCDsonthemarketarenotabletodisplaytheconsoleloginoptions,sotheycan'texploitthisvulnerability.Atthesametime,duetothelimitationsofthefailureconsolemodelitself,thevulnerabilitycannotbeexploitedfromthenetwork,inotherwords,thisvulnerabilityislimitedtostand-alone.]

Method6-usetheNETcommand（twoprerequisites）:

theWINDOWSXPpartitionmustbeloadedwithFAT32filesmallsystem,andthereisnoChinesecharacterintheusername.）

Weknowthatthe"netuser"commandisavailableinWindowsXP,whichcanaddandmodifyuseraccountinformation:

Netuser[UserName[Password[options]][/domain]*]

Netuser[UserName{Password/add[options][/domain]*}

Net,user,[UserName,[/delete],[/domain]]

ThespecificmeaningofeachparameterhasbeenexplainedindetailintheWindowsXPhelp.Here,Idon'telaborateonit.Well,nowlet'stakethelocaluser'zhangbq'passwordasanexampletoexplainhowtoforgettologin:

1.Restartyourcomputer.PresstheF8buttonimmediatelyafterthebootscreenappears.Selectsafemodewithcommandline".

2,attheendoftherun,thesystemliststhesystemsuperuser"Administrator"andthelocaluser"zhangbq"menu,clickthemouse"Administrator",enterthecommandlinemode.

3,typethecommand:

"netuserzhangbq123456/add",forcingthe"zhangbq"user'spasswordtobechangedto"123456"".Tothis,addanewuser（suchasusernameABCDEF,password123456）words,pleaseenter"netuserABCDEF123456/add",adding"netlocalgroupadministratorsABCDEFbythe/addcommanduserswillbeupgradedtothemanagementsyst