Change default image in computer

In our computers ADMIN'S USER ACCOUNT'S (welcome screen) picture is generally having the computer or laptop manufacturer image or some other images is in default. Here we see how to change the default picture  

First click start and click on the picture same like below the image 

Or click start and select control panel

In control panel select user accounts and safety 

On this window select user accounts

Here your computer's default picture is showed  

In a user accounts window click on change your picture 

In here some pictures are showing if you any of these you can select and click on change picture now your picture was changed 

Otherwise if you like to change with your's own picture means click on browse for more picture 

Select your drive and select your picture and then click ok 

My computer's picture was changed to my picture