Game Lagging and Crashed
@igotszerochill It's good that the flickering stopped in windowed fullscreen mode. You can leave it at that if you like, at least for now. It's not clear at this point whether the two issues are related.
But if you want to troubleshoot the flickering issue further, whether you plan on playing in fullscreen mode or not, a good place to start is with updating the graphics driver. HP doesn't offer one on its download page for your computer, but you can get the newest one available from Intel:
https://downloadcenter.intel.com/download/30196/Intel-Graphics-Driver-for-Windows-15-40-
Run the driver installer as an admin: right-click on the download and select "Run as administrator." Restart after installing and before trying to play.
Some HP computers come with software that blocks graphics drivers, and other non-HP drivers, from being installed. I don't know if that's the case for your system, but if you get an error when trying to install the above driver, just stop and let me know.
For the lag, please continue to play in a clean folder, with none of your current saves or other content. (If you've put anything into the clean folder you created before, please start with another clean folder, and put the game in windowed fullscreen.) Before you play though, please clear Origin's cache and repair the game, just to be thorough.
https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/
Start a new save in Willow Creek or Oasis Springs, since both worlds run well under normal circumstances. If the game still lags, try playing in a clean boot:
https://www.windowscentral.com/how-clean-boot-windows-10
Don't open any other apps aside from Origin. Additionally, please go through the Task Manager's background processes list and shut down anything that isn't absolutely critical—some applications can still run in a clean boot.
The point of all this is that most of the errors in your dxdiag are not directly related to Sims 4. These could be happening while you play, slowing down the game; or they could be totally irrelevant. The point is, we need to find out either way.
