If for some reason you don’t want to use Group Policy to disable the Windows 7 Action Center, then there is a registry key you can set to disable it.
HKLMSOFTWAREMICROSOFTWINDOWSCURRENTVERSIONPOLICIESEXPLORER
HIDESCAHEALTH=DWORD:00000001
Once the registry key is set to a value of “1”, certain items will be greyed out in the Action Center configuration, and you will no longer see the Action Center icon in the system tray.
There is a simple Group Policy setting for this as well, this is generally my preference, but I had a client who wanted to disable it in the image regardless.
User Configuration – Policies – Admin Templates – Start Menu and TaskBar – Remove the Action Center Icon