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