The password of your computer is stored inside a set of files & settings on your hard drive, meaning that if you're able to change windows password or reset these settings, you could make your computer have no stored password, which will allow you to log in again. Once you forgot windows password, you should use a windows password reset program, that's designed to remove windows password on your computer. Windows Login Recovery comes for your favor. Here is the guide:

1. Download Windows Login Recovery and install it in another computer you have access to.
2. Burn a bootable CD/DVD or USB flash drive.
3. Boot your PC from CD/DVD or USB.
4. Reset Windows password to be empty.
5. Log on your Windows PC without password.

What’s more, the Windows Login Recovery thoughtfully prepared 4 different versions to recover windows password, namely, the standard version, the professional version and the ultimate version. Different Versions have different merits, and you can choose the one you prefer most to get safely and easily.