Hence no option in the Nvidia control panel. You do not have the option in the Nvidia control panel since the intelĭriver / graphics processor is the default processor to handle video You have an 'Optimus' system which means you have an intel Your 'problem' is not a problem at all but its the nature of your The thread Force 4:3 ratio / pillarbox with 540M explains it : The Intel integrated graphics adapter in your computer is most probably
