An administrator (admin) password is the password to any Windows account that has administrator level access.
Most Windows versions also have an account named "Administrator" but it's only enabled and important in older operating systems like Windows XP.
Some of the steps involved in finding your admin password differ depending on the operating system you're using so I created these specific how-to guides to help:
- How To Find the Administrator Password in Windows 7
- How To Find the Administrator Password in Windows Vista
- How To Find the Administrator Password in Windows XP
It's important to note that some user accounts in Windows are already configured to be administrator accounts so an administrator password is most often the password to your account. Not all user accounts are set up this way, but many are, especially if you installed Windows on your computer yourself.