laurenlola22 Thanks for the dxdiag. The driver for your Nvidia GPU is somewhat old, so I'd suggest updating it. You can use the newest release from Nvidia:
https://www.nvidia.com/en-us/drivers/details/245673/
Run the installer as an admin: right-click the download and select "Run as administrator." Restart the computer after installing and before trying to play.
If that alone doesn't help, try forcing the game to launch in windowed mode. Open Options.ini, in Documents > Electronic Arts > The Sims 4, search for fullscreen , and set it to 0 (zero).