You need to install Windows 7 over an existing version of Windows. Which type of installation should you use to retain all your files, settings, and programs on your computer?

Selecting "Custom (advanced)" during installation performs a clean installation, which formats the drive and deletes all existing files, settings, and programs, contrary to the requirement.

A system repair operation is designed to fix issues with an existing Windows installation, not to perform an upgrade to a new version or retain existing programs.

Performing an in-place "Upgrade" installation using the Windows 7 installation disk allows the system to retain existing programs, user settings, and personal files while installing the new operating system. While Windows Easy Transfer can assist with migrating user data and settings, the "Upgrade" option during setup is specifically designed to maintain installed applications and their configurations.

A clean installation formats the hard drive, removing all existing files, settings, and programs, which directly contradicts the requirement to retain them.