Forgot administrator password

I have forgotten the administrator password of my windows professional, however i know the password of a user (power user), how can i change the administrator password.
Please help........
barrykunnel123Asked:
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qfrenCommented:
Windows  Password Recovery

Try the following,

First: Are you sure yove forgotton it? Try just hitting return (in case there is no password), Then try all the password you would usually use
remember passwords are CaSe senSiTive so try with the caps lock on and off, or capitalise the first "Letter"

NB. All these tools, and links are to third party tools and involve directly or indirectly changing the registry. I accept no responsibility for their use.

Your passwords are held (encrypted) in your registry and in youre "restore" directory. These tools edit one or more of these locations from a boot disk

Arm yourself with a blank (clean) Floppy Disk

Ive used this one on XP and it works

http://home.eunet.no/~pnordahl/ntpasswd/

Or try the following


----1----
This link will download software that creates a Linux Boot floppy that will let you change Passwords.

http://www.pc-pipeline.com/modules.php?op=modload&name=Downloads&file=index&req=getit&lid=6

----2----

Using this link you will have to download the Image writer then the boot disk image

http://www.thomasmathiesen.com/itak/html/software.html

----3----

Or try This one from Sunbelt

http://www.sunbeltsoftware.com/product.cfm?id=265

----4----

This ones NOT free but Its what I use

http://www.winternals.com/products/repairandrecovery/erdcommander2002.asp


----5----

Offline NT Password & Registry Editor, Bootdisk
http://home.eunet.no/~pnordahl/ntpasswd/bootdisk.html

---------

Heres some further reading

How to Log On to Windows XP If You Forget Your Password or Your Password Expires
http://support.microsoft.com/default.aspx?scid=kb;en-us;321305

http://www.petri.co.il/forgot_administrator_password.htm

Windows XP Security - The Big Joke
http://pubs.logicalexpressions.com/Pub0009/LPMArticle.asp?ID=173
FIX for above
http://support.microsoft.com/default.aspx?scid=kb;en-us;818200


*list credits go to PeteLong


q

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jb2063Commented:
Hi Barrykunnel123

This is a utility to (re)set the password of any user that has a valid (local) account on your NT system, by modifying  the crypted password in the registrys SAM file.
http://home.eunet.no/~pnordahl/ntpasswd/bootdisk.html
image files
http://home.eunet.no/~pnordahl/ntpasswd/bd030426.zip (1.4MB) - Bootdisk image, date 030426
http://home.eunet.no/~pnordahl/ntpasswd/sc030426.zip (~750KB) - SCSI-drivers (030426)
The unzipped image (bdxxxxxx.bin) is a block-to-block representation of the actual floppy, and the file cannot simply be copied to the floppy. Special tools must be used to write it block by block. For Dos, win95/98 & NT, use rawrite2.exe or some other imagewriter:
http://home.eunet.no/~pnordahl/ntpasswd/rawrite2.zip - DOS Program to write floppy images.

http://home.eunet.no/~pnordahl/ntpasswd/cd030426.zip (2MB) - Bootable CD image with same version and drivers as floppies above.

Previous versions (this uses the old NTFS driver, can try this if the new one won't work):
http://home.eunet.no/~pnordahl/ntpasswd/bd011022.zip (1.4MB - Bootdisk image, date 011022)
http://home.eunet.no/~pnordahl/ntpasswd/sc011022.zip (~700KB) - SCSI-drivers (011022) (only use newest drivers with newest bootdisk, this one works with bd011022)
====================

Another one
Change administrator password on NT/2000, without knowing it!!! Bootdisk...
http://www.thomasmathiesen.com/itak/html/software.html
image file
http://www.thomasmathiesen.com/filez/sw/external/linuxbootimage.zip
image writer
http://www.thomasmathiesen.com/filez/sw/external/imagewriter.zip
====================

Another one
Offline NT Password and Registry Editor
http://www.pc-pipeline.com/modules.php?op=modload&name=Downloads&file=index&req=viewdownload&cid=3

Download it here
http://www.pc-pipeline.com/modules.php?op=modload&name=Downloads&file=index&req=getit&lid=6

Run it to create a boot floppy then follow the instructions. If you choose to do this then you are doing this at your own risk. Just change the admin pw and login then change the account pw's that you desire.

Make sure you have a floppy disk in the floppy drive and let the program create the boot floppy. Now restart the machine a let it boot from the floppy. Now follow what it instructs you to do.

Use it like a bootdisk.

Another one
NTFS/FAT Boot disk for password recovery/reset
http://www.pchelplive.com/modules.php?name=Downloads 
----------------------------------

NTAccess can replace the administrator password of a Windows XP, Windows NT or Windows 2000 system by rebooting the computer with a special set of boot disks or CD-ROM (XP only). This is useful if you forgot the administrator password and cannot access the Windows XP/2000/NT system.
http://www.sunbeltsoftware.com/product.cfm?id=265


The Password Auditing and Recovery Application
http://www.atstake.com/research/lc/index.html

L0phtCrack, The integrated password cracker for NT
http://www.securiteam.com/tools/L0phtCrack__The_integrated_password_cracker_for_NT.html

ERD Commander
http://www.winternals.com/products/repairandrecovery/erdcommander2002.asp

When your server or workstation won't boot, you need ERD Commander 2002. ERD Commander 2002 boots dead systems directly from CD into a Windows-like environment. You'll have full access to the dead system's volumes, so you can diagnose and repair problems using tools located on the ERD Commander 2002 Start menu. And you'll have built-in network access to safely move data off of, or on to, the dead system. With ERD Commander 2002 you can repair a system quickly and easily, saving you time and rescuing your critical data.
--------------------------------------

Or you could, if you have a FAT32 file system, just boot to a Win98 bootdisk and rename the SAM file (registry Hive) in the C:\WINNT\system32\config folder to something else. Of course this will remove all accounts on the system and you will need to rebuild them. If you are using NTFS then boot to the Win2000 CD and do this from the Recovery console.

For XP
Windows XP Tip: Password Recovery Disk
Take preventive measures against losing user-level passwords
http://www.techtv.com/callforhelp/answerstips/story/0,24330,3356093,00.html

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Windows 2000

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