- Change the BIOS settings on your PC to allow it to boot from a CD.
- Put your bootable windows XP CD in to the CD Rom and once you see the "Press any key to boot from CD" message press any key on the keyboard.
- Press Enter on Welcome screen and hit F8 key to license agreement screen.
- Setup will display your existing Windows operating system and you need to press R key to start the repair process.
- Setup will copy some files and restart your computer. When it is rebooting do not response to the "Press any key to boot from CD" message.
- It will continue the setup and look for the progress bar on bottom left hand corner. Once you see "Installing devices" in there press Shift+F10
- It will open up the command prompt and you need to type the following command in there and press enter key to continue. NUSRMGR.CPL
- It will open up the user accounts window on your control panel and from there you can simply select the administrator account or any other user account and can press Reset Password button.
- Once you finished resetting the password you can type exit on the command prompt to get rid of it.
- Continue the setup until it finishes and that will save your password changes to the system.
Note:- All your programs and Data will be safe because we just did a repair on the operating system.