I have the same problem. Running windows 10.
I have the CD version of the game which does download, but the launcher won't even open.
I tried registering the game on origin and got sent to the sims 3 site.
I entered the code there, and it just said my code was invalid.
@AmberHartz , you'll need to contact EA Help to have the game added to your Origin account. You'll need to provide proof you own the game on CD/DVD, provide your original game code (usually a photo of your code will do) and they can add the game to your Origin account.
