First thing first, you will need the Media Creation Tool:
https://www.microsoft.com/en-us/software-download/windows10
Forgetting a password can be one of the more frustrating things to deal with, and if you’re unlucky enough to have forgotten the password to your Windows 10 PC account, you may be cursing to the heavens, so to speak. The good news is you can avoid this by creating a password reset disk.
Important note: A password reset disk only works with a Local account on your PC, not a Microsoft account. The steps for recovering a Microsoft account password are different.
What is a password reset disk? A password reset disk is a file you create on a USB drive or an SD card that when plugged into your Windows PC will allow you to reset your password right on the lock screen.
The best part about the password reset disk is that you only have to create it once, and it will work forever, no matter how many times you have to use it.
This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 10 operating system (Home, Professional, Enterprise, Education) from all supported hardware manufactures, like Dell, HP, Acer, Asus, Toshiba, Lenovo, and Samsung).