What are two possible methods to reset a roommate's forgotten password on a Windows 7 desktop?

Using an administrator account and a password reset disk is a valid and effective method for resetting a roommate's forgotten password on a Windows 7 desktop.

When an administrator account is available, it has the necessary privileges to change passwords for standard user accounts. This allows the administrator to log in and access the user account settings, where the password can be reset without the need for additional tools.

A password reset disk is another helpful tool, specifically designed for situations where users forget their passwords. When created beforehand, it provides a straightforward way to reset a password directly at the login screen, ensuring the user can regain access without losing data or requiring a complete OS reinstall.

In this scenario, the combination of using the administrator account and the password reset disk covers both situations effectively: it utilizes built-in security features while also relying on preventive measures taken prior to the password being forgotten.