Which type of account grants complete access to a computer?

The Administrator account is designed to grant complete access to a computer, allowing the user to perform a wide range of tasks that standard users cannot. With an Administrator account, users can install and uninstall software, modify system settings, manage user accounts, and have the ability to configure security settings. This level of access is crucial for system maintenance and troubleshooting.

In contrast, a User account typically has limited permissions, restricting access to sensitive system areas and functions. This helps safeguard the operating system from unintentional or malicious changes by limiting what standard users can do.

A Guest account provides even more restricted access, allowing users to perform minimal tasks without altering system settings or installing programs. It is generally designed for temporary use and does not retain changes made by the guest user after logging out.

The Power user account sits between standard User and Administrator accounts, offering more privileges than a typical user, like the ability to run some administrative tasks, but still lacking complete control over the system that an Administrator account possesses.