Windows 8 locked because the password were lost, how can I change it without needing to reinstall it?

I installed Windows 8 on my mother’s notebook, she typed a new password for her and she lost it, she can’t remember what she typed and no notes about it were made(my fault), now her Windows 8 installation just keep locked on logon/password screen.

How can I change the Windows 8 password for her account, reset the password or recovery the password without needing to reinstall entire Windows 8?

Could I just create another new account on the same computer from the safe mode or something like this?

PS: No live account was related to her Windows 8 account as far no account was registered on Windows 8 Store.

Solution:

Checkout Hirens bootdisk. http://www.hiren.info/pages/bootcd

I’ve made several custom bootdisks for various troubleshooting situations.  There are a variety of password reset utilities you can use along with a plethora of other useful utilities.