Re: Sims 4 Crash on startup

@VictoriaGiggles  Your dxdia has a number of errors related to the Nvidia GPU driver.  A clean uninstall and reinstall is probably in order.  Here's how to do it:

First, download Display Driver Uninstaller from here:

https://www.wagnardsoft.com/forums/viewtopic.php?f=5&t=2421

You can download a fresh driver here:

https://www.nvidia.com/Download/driverResults.aspx/155056/en-us

Next, take your computer completely offline—disable wifi and/or pull the ethernet cord—and double-click the DDU.exe.  Take note of where the file will land, and click Extract.  If it's easier, you can copy the path and then paste it into the address bar in a File Explorer window.  Open the folder and then Display Driver Uninstaller.exe, and you'll get a message that you're not in Safe Mode.  Click OK, then go to Options and enable Safe Mode dialog.  Here's a screenshot of what your options should look like:

Close options, and the DDU, and then open the DDU.exe again.  For launch options, choose "Safe Mode (Recommended)," and then click Reboot to Safe Mode (you'll need your password, so find it before rebooting).  Once you login, you'll see this:

Choose GPU in the dropdown menu (step one), then Nvidia (step 2) if it's not already showing.  Then click Clean and Restart (step 3).

Once your computer has rebooted, now back in normal mode, run the driver install .exe in custom mode. Select "perform a clean installation" and install ONLY the GPU driver and the PHYSX software.

Reboot again and see whether you can launch the game.  If not, try a couple of times, then run another dxdiag.