Have a look on the list of programmes and Google any you don't recognise, then you may find a programme he has added and you can delete it. Such a shame when family relationships break down.
Cat among the Pigeons? Not quite. (a light hearted post)
My daughter is lying about me and editing me out of her life.
I don't think he could disable your laptop with his PC.. have you connected your new laptop before ? Or is it brand new?