Sims 4 not starting — uninstall and repair not working

@amf189  It looks like your drives are in good health, or rather your two partitions of the one drive, but that chkdsk did need to do some cleanup.  That's nothing to worry about since it was successful.  Can you play now, or do you get the same error?  And when you reinstalled the game, did you reinstall it to C or D?

@puzzlezaddict I still get the same error.  And when I reinstalled, I installed it to the C drive.

Any other ideas on what to try?  Do you think it’s because this computer is old and I’m running Windows 7 for it?

@amf189  The problem might be Windows 7 combined with the age of the hardware.  There is a known error related to Windows 7 and Sims 4 in DirectX 11 mode, but the problem goes away in DirectX 9 mode, and you're getting a different error than those other people.  Here's the master thread if you're curious:

https://answers.ea.com/t5/PC/There-s-a-problem-with-your-game-s-setup-Please-reinstall-your/td-p/14049960

I really don't know what else to suggest here, unfortunately.  I can't prove that the problem is the OS or the old hardware, but it's a very reasonable possibility.  If you want to take one more shot at it, I'd suggest doing a clean reinstall and using a folder on D (which is the same physical drive, but the different address in the file system might help). It's the same process as before, just with a different install location.

Other than that, I suppose you could reinstall Windows, if you're willing.  But it might be time to start looking for a new computer.  Aside from all these issues, the newer one should be so much faster both in Sims 4 and in general.