Change welcome screen name

In our computer system ADMIN'S USER ACCOUNT (Welcome screen and personal folder's) name is our products manufacturer's name are given In here we see how to change the name's on log on screen and personal folder First click start and select the picture of the right top OR Click start and select control panel In here select user accounts and family safety on this window select user accounts In here click on"change your account name " On next window type your new name on "new account name" and click on change name Here my default account name was changed Change default welcome screen image in computer