and then u'ill see the window like this
then just change the option from "Install updates automatically(recommended)" to "Never check for updates(not recommended)" in the Top drop down list then remove the tick from "Give me recommended the same way i receive important update" & "Allow all users to update on this computer" check boxes.
Like u can see in the below image
but if still your windows will update automatically and shows the error that your windows is not genuine then you have to follow the cure and for doing this