Hello,
I have some news about this problem.
I just formatted my computer today, and tried launching the game after installing avira (instead of avast), and steam.
The game was finally launching.
Before playing, I installed some other soft that I need, and… now the black screen is back. Even after a reinstall.
I’m leaving here the list of my newly installed software, if you could find the problem.
There’s nothing unusual though, I’m a bit surprised.
Edit : Okay, I just had a BSOD because of my video drivers… Let’s try again reinstalling it. x)
Re-Edit : Drivers cleaned, and reinstalled. Game is still not launching, and no errors are showing.
I updated my installed software list.