Open the "Control Panel". You can do this by clicking on Start -> Settings -> Control Panel. If you have the standard view, click onStart -> Control Panel. If all else fails you can go to Start -> Run -> type "control panel" and press "OK".
Open "System". If you don't see the System icon you may have to press "Switch to Classic View" on the left panel. If all else fails here you can go to Start -> Run -> type "sysdm.cpl".
Click on the tab called "Automatic Updates". This tab is on the top row and second from the left.
Select "Turn off Automatic Updates". You must press the white circle on the left of the text to select it.