This took 30 minutes. The wizard showed percentage: 0% → 45% → 78% → 99%. It then switched to:

Three reboots later, Grandpa Joe saw a fresh, fast Windows 10 desktop. No glitches. No freezing.

Sarah knew the PC was six years old, originally running Windows 8.1. It had been upgraded over time, but now it was sluggish, glitchy, and full of old drivers. "Don't worry, Grandpa. We need a fresh start. We’re going to use the Windows 10 Download Wizard."

A blue window appeared. No scary red text or flashing ads. Just a clean license agreement. "Accept."