*Will not work if the password wasn’t changed since a long time.
OK so you must get the bootable Windows DVD installation. Make your BIOS able to boot it then go search for repair computer in small down the windows, click next if you dont see it yet. Now you go to troubleshoot then go to advanced option and then SYSTEM RESTORE point. Then chose a date before to get an older password account. Reboot and It will ask for the older password account.