downloaded my sisters cc and now sims wont load past the first loading screen

@snifimini  Please move the entire Mods folder to the desktop, delete localthumbcache.package, and make sure the game still works.  If it doesn't, stop here, and run a dxdiag and attach it to a post.

https://help.ea.com/en/help/pc/how-to-gather-dxdiag-information/

Otherwise, use the 50/50 method to sort through your mods and custom content.  Please keep in mind that you may have more than one broken item, so you'll need to test each file at least once.

https://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content#The_50.25_Method