How to Reinstall Windows from a USB Drive (2026 Guide)

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A clean install is the “nuclear option”—it wipes everything and starts fresh. It is the only way to ensure 100% of bugs, viruses, and bloatware are gone.

Step 1: Create the Media

  1. Grab a blank 8GB+ USB drive.
  2. Download the Windows Media Creation Tool from Microsoft’s official site.
  3. Follow the prompts to “Create installation media for another PC.”

Step 2: Booting from USB

  1. Plug the USB into your laptop and restart.
  2. Immediately tap your Boot Menu Key (usually F12, F10, or ESC).
  3. Select the USB drive from the list.

Step 3: The Install

  1. When asked for a product key, click “I don’t have a product key.” Windows will activate automatically once you go online (it’s tied to your motherboard).
  2. Choose “Custom: Install Windows only (advanced).”
  3. Delete all partitions on your “Drive 0” until it says “Unallocated Space,” then click Next.

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