You can download the game through the Origin Client which you can download here: http://origin.com/download. Log in the client, if you've registered the games at thesims3.com, the games should already be available for download.
If you didn't, you should be able to redeem the codes.
But you need the disk to start the game -_-
Not with the digital download version. Wouldn't make much sense since most people that have the digital download don't have a disc in the first place.
What if you don't have the disk, then?
then you shouldn't get the message.
Do you get the message with the download version (latest expansion pack)
I could not find my disc when I first asked for help with this problem. But I did have my box, the booklet, and my Product code. It would not allow me to add the game to my library even with my product code. said that it had already been used. I don't know how. I have since found my disc, but I have to use an external drive with this laptop and would prefer to not Have to do so just to play my game. Not sure what I am doing wrong...
@TmBJds It sounds like the product code was already registered to an EA/Origin account, or perhaps on the Sims 3 Store site, which amounts to the same thing. In that case, you'd simply need to login to that account and download your game from there.
If you can't figure out which account owns your game, you can try contacting EA customer support for help. Take a photo that includes the disc, case, and insert with the code showing and readable; you can upload the photo when you submit the live chat request.
