hey i've done some reading and it seems the same thing is problematic with other's computers too, apparently it is to do with hardware stuff and it isn't disableable through windows, you have to go into your bios settings and disable "ACPI APIC Support", which will in turn disable it on startup, if not then look in the services again for the executeable that's running (given by the processes tab in the task manager)
Cheers,
Jamey
Cheers,
Jamey