Starting yesterday my Arma began launching in 640x480 resolution with no loading screen or menus visible. I can hear the music but it's like I'm focused in the top left corner of the main menu.
I determined it was TFAR by removing all launch parameters and systematically removing all mods.
I updated my drivers after the problem started and it had no effect.
The workaround I found is to append "-window" to my launch parameters and change to fullscreen once Arma starts up.
Has anyone else experienced this?