so, my laptop monitor started acting a little funky a few months ago. it would go black every now and then, but i'd just tap it and it would come back on. now it goes blank and i have to almost twist the monitor off just for the display to stay up. once i take pressure off the monitor, it goes black. so screw this thing. what do i have to do to switch my truck onto my girlfriends mac?? thanks in advance. -Garrett