to disable windows security center:
click start -> control panel -> performance and maintenance -> administrative tools -> services -> you will end up in service local, scroll down and look for "security center" -> right click and click properties -> change the start up type, choose disable.
click start -> control panel -> performance and maintenance -> administrative tools -> services -> you will end up in service local, scroll down and look for "security center" -> right click and click properties -> change the start up type, choose disable.