so i had several expansion packs on my old pc, but sims 3 stopped working on it so i gave up, i gave my discs and codes to a friend i no longer have contact with, so when i got a new pc recently i couldnt get the games. i caved and bought the base game again, and then decided to try and salvage my expansion packs. so i have them on an sd card and applied them the way they were on the old pc
Using this method, if you get all your Sims 3 games/expansions registered with EA, you'll be able to download digital versions of each of them and install. Unfortunately not. To install the expansions on the Steam version, you will have to buy the DLC directly from Steam. Any disk expansion packs will not work unless you have a non-SteamttQg.