Changes to Aspect Ratio for Sims 4 causing White/Black Screen and crashes EA App

@NovaPaladin  Your graphics driver is not in fact up to date; its version is from August.  (This is about the driver, not the video card, which generally does not get firmware updates.)  The Nvidia audio driver is part of the graphics driver package.  So it's best to install the newest graphics driver, which you can get here:

https://www.nvidia.com/en-us/drivers/

Choose GeForce, RTX 40 series, RTX 4070, Windows 11, and download the Game Ready Driver.  Run it as an admin: right-click the download and select "Run as administrator."  Choose the Custom (not Express) install method, and check the box to perform a clean install.  Restart when you're done and before trying to play.

This is important not so much for the update itself—it's okay to be a few months behind if you don't need the new features of a newer driver—but because most of the errors in your dxdiag are crashes of the graphics driver.  Updating will hopefully clear those up.

As a side note, you talked about the aspect ratio in Sims 4, but you're actually referencing the resolution.  The aspect ratio is the ratio of length to width, for example 1920x1080 has a 16:9 aspect ratio, and 1920x1200 is 16:10.  When playing in fullscreen or windowed fullscreen mode, you should always match the aspect ratio of your monitor, but you don't need to match the resolution.  Your monitor is 3840x2160, which is also 16:9, so any other 16:9 aspect ratio is fine, including 1920x1080 and below, but 1920x1200 could be a problem.