Re: unable to start game; service initialization failed (0x024e424f)
@Nargum Sorry for the late-ish reply; I wasn't around (online) yesterday afternoon and evening.
This isn't immediately relevant, but when you reinstalled Windows, you installed build 1909, which will go out of support in a few months. It's not likely to be causing your issue; I just figured I'd mention it.
What is relevant is that many of the Sims 3 errors in both dxdiags reference MSVCR80.dll, a component of the 2005 VC++ runtime. Sims 3 uses the x86 version, and its absence or corruption will crash the game every time. The runtimes only started being cumulative with the 2015 versions; each of the earlier ones is standalone, so Sims 3 can't and won't use anything other than the 2005 x86 runtime.
Please download a new copy of the runtime from Microsoft; if you already have it installed, uninstall first (don't repair, do a full uninstall) and then download a new copy. You can get it here:
https://www.microsoft.com/en-us/download/details.aspx?id=26347
Restart your computer after installing and before trying to play. If you get the same error, please clear Origin's cache (again, if you already have) and repair the game: open your game library, right-click on the Sims 3 icon, and select Repair. If you've taken steps to get your graphics card recognized, the repair will replace the .sgr files with default copies, so save your current ones elsewhere before repairing. But please try to run the game at least once with no changes to any files.
If this doesn't help either, you may need to uninstall the game, clean your computer's registry, and reinstall. The error you're seeing is often caused by extra registry data or a mismatch between the game's entries and what Origin expects. Downloading from Origin is more efficient, that is if you're stuck with Origin anyway, and it doesn't carry the risk of incomplete patching or registry mismatches. If you don't feel like combing through the registry manually, CCleaner or Revo Uninstaller will do it for you; let me know if you need instructions.