I want to play The Sims 3 so I installed via Origin. After the installation was finished I opened the launcher and got a message saying there was an error during startup and that I should check the log. Couldn't find a log. Restarted my computer and got a different message saying Origin is required.

I uninstalled and tried a different method. Sharing the game files from my old computer to my current one. After copy pasting the files onto my pc it either opens the launcher and says the installation is incomplete or it opens the EA app and says to repair the game (That option isn't available if you didn't install directly through the app so I couldn't try that)

Uninstalled again and tried the last method. Using a pre-2012 disc. My current laptop doesn't have a disc drive so I put the disc into my old computer and shared the disc. I successfully installed and the launcher opened with no errors. But now I get an error message saying I need the disc.

So now I'm out of luck because I've tried all the known methods and none work. I can't search the internet for answers because none of the threads about launcher error messages are recent and I have a feeling this is related to the EA app.

Patch the game up to 1.67 using the superpatcher:
Game Help:TS3 Patching^wiki
Direct link: http://akamai.cdn.ea.com/eadownload...40xx_update.exe
Then install this mod:
https://www.nraas.net/community/NoCD
And run the game from [install location]\Electronic Arts\The Sims 3\Game\Bin\TS3W.exe