I need my password or Dell Latitude D400

use usb bootable konboot to bypass user login then create admin account and delete existing one :)

For BIOS password reset, go to:
http://tinyurl.com/HowToResetBiosPassword
For admin password reset, go to:
http://www.windowspasswordsrecovery.com/articles/win7/recover-windows-7-administrator-password.html

Forgot dell admin password? I also met the same trouble with you, but i used Smartkey Windows Password Recovery to help me to reset forgotten windows password, and you can see the detail direction from http://www.recoverlostpassword.com/products/windowspasswordrecovery.html.

Dell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-b120-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

Try z9qfeyt1

WELL FRIEND
DOWNLOAD PCLOGINNOW FROM SOURCEFORGE.NET AND BURN THE ISO IN A CD
NOW BOOT WITH IT
NOW SELECT THE USER ACCOUNT(ADMINISTRATOR)
AND CHECK THE IS EMPTY BOX

PASSWORD HAS BEEN RESET NOW

Read this
http://www.petri.co.il/forgot_administrator_password.htm
and then get and use the Offline NT Password & Registry Editor - it's the one that is the easiest to use.

After a lot of research and many attempts to unlock my Dell Laptop with bios password, while talking to Dell Support, I finally found this website www.biosunlock.com

Dell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-1000-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

I believe I can help you. Is this a Windows password after it boots up, or is this a bios power on password before it boots? The bios password on a Dell is generally on a white screen when it's first powered. Get back to me, and I'll get you thought this.