Did you lost your windows local password for windows 7/vista/xp or the domain admin password for windows server 2000/2003/2008?
However, if you have a password reset disk created before you lost password, you can reset your lost password directly. Or you can select a windows password reset software to help you reset it.
If you lost windows 7/vista/xp admin logon password, you can try windows password unlocker professional with a bootable cd/dvd or usb flash drive. If not, you can try windows password unlocker enterprise with a bootable cd/dvd or usb flash drive to reset your forgotten windows server 2000/2003/2008 domain admin password with easy.