Monitor display extension won't work

[Jemor]

I've just purchased the game from Steam as I have many other games, however FS 19 won't work with my display extension and sound bar that I've used on every game I've play on this machine to date.
The game eventually comes on, but missing the introduction screens and sounds and no sound in game. All seems to work fine through my laptop only display though. Can anyone shed some light as to what's going on please?.