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Windows 10 – Toddler Deletes Everything with 6 Clicks
OK, it's a click-bait title, but check this out: You're only 6 clicks away from wiping out your Windows 10 installation.
Starting from the Desktop, click on: Start / Settings / Update & Security / Recovery / Get Started (Reset this PC) / Remove Everything
You are never asked to enter a password, or type in "Remove Everything" as a fail-safe.