Re: SIMS 4 NOT STARTING, NO MODS INSTALLED, DRIVERS UP TO DATE!
@Megamatthew75 Please try playing in the new user account again, but this time while doing a clean boot:
https://www.windowscentral.com/how-clean-boot-windows-10
When you've rebooted, go through the Task Manager's background processes list and end any task that doesn't absolutely need to be running, for example any Corsair or Razer software. Some programs, anything from MSI Afterburner to RGB software, don't get disabled in a clean boot, so it's necessary to manually quit them.
If that doesn't help, please run a new dxdiag.