I just downloaded overwatch for the first time and ever time I open it it my monitor goes black and says out of range. I can hear music though but have no idea how to fix it. I have never had this problem with any other game.
We actually have a Support Article for this here.
To reset the in-game options if you cannot get into the game you can go via the Battle.net launcher and there is an option for this in the Settings > Game Settings > Overwatch.