Screen turning black on launch

ShadowCat56​  If the game hasn't created a new Sims 4 folder in the same location as the one you removed, then you haven't moved the folder it was reading.  It will start writing to the folder as soon as it starts to load.  So that other folder is somewhere.

If you can't find it, search your computer for Config.log and look for any Sims 4 folder that contains it.  You may find more than one, which is fine; just rename all of them and see where the new Sims 4 folder gets created.

If this doesn't help, please try forcing the game to launch in windowed mode.  Once you've found the folder the game is reading, open Options.ini inside, search for fullscreen , and set it to 0 (zero).

If you really can't find that folder, you can force windowed mode in Steam.  Open Sims 4 > Properties > General and add -w under Launch Options.

If that doesn't help either, unplug your secondary monitor, restart the laptop, and try with only the laptop screen active.