The Sims 4 can be played in windowed mode or full screen mode. Windowed mode performs better on some systems, and can be activated from the in-game menu by going to the menu (the ... in the top right), going to Game Options, and then Graphics. Select Display Type: Windowed. 

If your game is crashing at start-up or you are seeing a black or white screen and then you are unable to play, you may want to try starting the game in Windowed mode instead. You can do so by following these instructions:

1. In Origin, right click on the game tile and choose Game Properties
2. Add -w to the Command Line Argument field
3. Hit Apply
4. Start the game