Im not sure i understand trying to get your password if you cant remember your password or have not assigned one
during the boot up process you will see a certain key to press to enter set up press and hold that key to eneter set up

scroll down to set user password or supervisor password you can change or remove your password from there also click start control panel user accounts on the users tab,click the name of the computer administrator you must have full control can change the password there
Also
i have used this software and no that it works although you might have to get a computer with an internet connection to download and burn it to a disc
http://majorgeeks.com/download.php?det=5710
UBCD4Win is a bootable CD which contains software that allows you to repair, restore, or diagnose almost any computer problem also has a bios reset tool which can remove your password and bios password
you will have to burn it to a disk as an ISO then you will have to boot from the disc During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS the scroll down to advanced bios features press enter change your first boot device to cd press escape then press f10 to save to cmos to restart (note after you have removed your password you will have change first boot back to your hard drive)

http://www.filebuzz.com/findsoftware/Free_Password_Remover/1.html

you fill find a few password removal programs pay and freeware
if you need more help with this post a reply
Hope this helps