ok, so i want to hook up my laptop to a tv with a VGA connector. the problem is that my laptop wont let me make the tv my primary monitor, and thus, my laptop screen must remain on while i watch movies on my Tv. Is there a way to disable my laptop monitor so that the only display is the tv. i fooled around with the display options, but the tab that says "make this my primary monitor" is checked, and greyed out so i cant modify that field for my laptop screen. any help would be great. thanks