Take computer Windows XP as example:
- Start computer using Windows XP Setup CD.
- When it asks to repair our current Windows installation, choose “Accept” it and press "R" to run the repair. Then computer will begin to repair our Windows and copy files to hard drive.
- Setup will reboot system. Please don’t press any key when there is “Press any key to continue...”
- Now computer will do other tasks and there will be a progress bar displayed. Please notice carefully the details shown at the bottom of screen.
- Once "Installing Devices" comes up, press keys: Shift+F10. Input: nusrmgr.cpl and press Enter key at the Command Prompt window.
- The same "User Accounts" window will display as it is in Control Panel. Choose “Administrator account” and select any account listed to change or remove your computer password.
Note: If somethings wrong you may send me an email or leave a comment