I'm not 100% sure, but is AMT a driver, a service, or a chipset/BIOS setting? You can get the service name by looking for in the list; start run services.msc Stop it with the command line; sc stop servicename For example. Stopping unnecessary Intel services.
Intel(R) Capability Licensing Service Interface sc stop 'Intel(R) Capability Licensing Service Interface' ECHO. Intel(R) Content Protection HECI Service sc stop cphs ECHO. Intel(R) Dynamic Application Loader Host Interface Service sc stop jhiservice ECHO. Intel(R) Management and Security Application Local Management Service sc stop LMS ECHO. Intel(R) Management and Security Application User Notification Service sc stop UNS ECHO. Disabling unnecessary services.
Sc config 'Intel(R) Capability Licensing Service Interface' start= disabled sc config cphs start= disabled sc config jhiservice start= disabled sc config LMS start= disabled sc config UNS start= disabled:done ECHO. If it's a BIOS thing, then there is a command-line utility suggested here that might help: Just for my curiosity, why do you need to disable it?