To reset Windows 10 by using the Start menu, follow Start > Settings > Update & Security > Recovery > Reset this PC. Click on Remove everything in order to do a full wipe. It erases all of the current programs and personal files on the computer and restores it to its factory settings, but a new copy of Windows 10 is installed.
For more read - how to reset computer factory settings (https://datarecovee.com/how-to-factory-reset-pc/)