How-To Geek

According to the below "If you have Windows 8, you'll need to reinstall Windows" Unless somebody knows of a way.

http://windows.microsoft.com/e.....s-password

Found this, it may help

http://www.troublefixers.com/w.....set-guide/

Recovering a lost password If you or a user forgets or loses their password, there are a couple of things you can do to reset it: If you’re using a Microsoft account, then you can administer your user account online. Simply go to the webpage and there will be an option to change your password. If you have another administrator account set up, use that one to change your password. If you are using a local account, you can use your password hint to remind you. Perhaps the best thing you can do is a little disaster prevention. You can build redundancy into your logins by also setting up a picture password and PIN. That way, even if you forget your text password, you still have two other login methods in your back pocket. Otherwise, if you’ve tried all these suggestions to no avail, then you might have to reinstall Windows.

Klein, Matthew; Heddings, Lowell (2012-10-23). The How-To Geek Guide to Windows 8 (Kindle Locations 2552-2558). How-To Geek. Kindle Edition.