Nikkispencer,

You will need to purchase a Windows 7 usb disk or download Windows 7 iso and create a  bootable usb to install Windows.

Windows 7

You can reset Windows 7 password using the free open-source software -  Offline NT Password & Registry Editor:

pogostick.net/.../

How to use Offline NT Password & Registry Editor:

www.top-password.com/.../reset-windows-7-password-with-chntpw.html

www.techrepublic.com/.../

Note: Offline NT Password & Registry Editor can boot from a live USB drive.