@erinlive Please try disabling Origin in-game: hover over your username, select Application Settings, then the Origin in-game header, and disable the option at the top.
If that doesn't help, please move your entire Sims 4 folder out of Documents\Electronic Arts and onto your desktop. When you launch the game, if it launches, a clean folder will spawn with no content. Don't add anything to it yet; just see whether you can get far enough to start a new save and play in live mode for a bit. Let me know either way.
If you still get the white screen, please run a dxdiag and attach it to a post.
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
@shaybayby Please post a screenshot of the error you're seeing.