How do switch on defender - it seems to be overiden by norton and macfey and will not switch on clicking on the correct line in action center just turns the line to coloured and the action buttons dont illuminate? the also is happening on windoows 7. do l need to remove the programmes? also why does the wireless adapter need frequent resetting again this has only happened since l received updates before that it never happened? the i phone works ok so must be in desktops.