Re: sims 3 originally installed on my pc via disc want expansion packs from online.
@Steph111602 Are you talking about downloading the new packs through Origin? If so, you should be able to combine the install—Origin is supposed to handle mixed disc/digital installs fine. In practice, sometimes the disc-installed packs can disappear from the launcher. The fix is usually to clear Origin's cache, uninstall Origin, or uninstall and reinstall the pack.
It would make things easier if you could also register your discs to your Origin account now; that way Origin should never lose track of any of the packs you own. The codes you'd need to register are the same 20-character keys you used to install the discs. If you registered those packs on the old Sims 3 site, that would also count. You could use the same email address and password in Origin as you did on that site, and your packs should already be in your game library. Then you could add whatever you wanted to the same account without worrying about it.