Recover Windows XP password

If you have lost you password and you were using account other than Administrator then you can log in with administrator account because during windows install Administrator password is left blank(if you didn't applied) At the winndows logon press Ctrl+Alt and press Del key 3 times. It will show you the classic logon window. There you can type Administrator in User and leave pass blank hit enter key or press OK. You will log into administrator account and now you can change your previous account password.
This will only work if you or your system engineer have left your password blank at the time of windows install.

If this doesn't work you can try this::::
This is bit risky and needs severe attention and skills. Follow the steps.

A. Boot using Windows XP Setup CD and follow the instruction like Accepting EULA, etc.

B. When it asks to repair your existing Windows installation, accept it and press “R” to run the repair.

C. Setup will start repairing your Windows and will start copying files, etc.

D. After a few minutes setup will restart your system and when it restarts don’t press any key when it shows “Press any key to continue…” otherwise Setup will start from the beginning. Don’t press any key and setup will resume where it left.

E. Now it’ll start doing other tasks and will show a small progressbar with a few details in left side.

F. Look carefully at the details and when it shows “Installing devices“, press +F10 keys in your keyboard.

G. It’ll open a Command Prompt window. Now type nusrmgr.cpl and press .

H. It’ll open the same “User Accounts” window which you see in Control Panel.

I. Now you can remove or reset any account password without any problem.