You install Windows 7. When you restart your computer, Windows 7 fails to start. Which tool should you use to diagnose the problem?

The Windows Recovery Environment (WinRE) is a diagnostic and repair platform that provides tools like Startup Repair, System Restore, and a Command Prompt, which are essential for troubleshooting and fixing Windows boot failures.

Windows Update is used for installing system updates, not for diagnosing or repairing boot failures.

Last Known Good Configuration is a boot option that attempts to start Windows with a previous working configuration, but it is not a comprehensive diagnostic tool like WinRE.

Windows Easy Transfer is a utility for migrating user data and settings to a new computer, unrelated to boot problem diagnosis.