How to erase login password

[buddyclm]

I have a laptop with Windows 8 and do not know the password to get onto the laptop.  It is an email address.  I tried Windows NT offline password and registry editor and I can see the users, I tell it to blank the password, restart the machine and the password still exists.  I have another program that is supposed to remove or change passwords but it says it can't see the operating system.  Is there a way to remove the password so I can access the laptop?

[Allan]

If you're talking about the Windows password, see here: http://windows.microsoft.com/en-us/windows/what-do-forget-windows-password#1TC=windows-7

If you're talking about the bios password we can't help you.