Solved
Why is the sims 4 not loading and only showing a white screen?
The sims has not been loading for me lately. I have had this problem before but eventually, it starts working again, but it hasn't this time. When I open the game it gets all the way up to the screen...
Try doing a factory reset as described in this post: http://answers.ea.com/t5/The-Sims-4/FAQ-Troubleshooting-Steps-amp-Known-Issues/m-p/3621199
