ren cmd.exe utilman.exe
This will replace the Ease of Access button at the Windows login screen with a shortcut to the Command Prompt application. From here, you can proceed to enter the command to reset the computer password.
Step 7: Use the command below to restart the computer. This time, please start the computer in the usual way, not through the USB Boot tool anymore.
Step 8: When you are returned to the login screen, click the Ease of Access button in the bottom right corner, it will launch the Command Prompt.
Step 9: You can now access the Command Prompt on the login screen, use it to change the passwords of the accounts. Enter the following command to change and set a new password for the respective account.
Replace 'name' and 'new password' as appropriate for your case.
And so you have successfully changed the password and can use this password to log in to Windows 10.
You should also then revert the changes you made to the Ease of Access button. Please reboot from USB, and access Command Prompt like Step 4, and enter 3 commands in turn: