After you select an option, click Reset to begin.

The Just Remove My Files option will take somewhere in the neighborhood of two hours, while the Fully Clean The Drive option can take as long as four hours.

Of course, your mileage may vary.

How long does it take for a computer to reset to factory settings?

If you are using a disk, around an hour, same with a USB. Give or take 20 minutes, depending on how much data you have on the hard drive, and how big it is(500gb takes less time to format than a 1tb). The other mode which has become available, is the factory reset option, which can take up to 2 hours.

What does a Windows 10 Reset do?

Resetting reinstalls Windows 10, but lets you choose whether to keep your files or remove them, and then reinstalls Windows. You can reset your PC from Settings, the sign-in screen, or by using a recovery drive or installation media.