[propbeanie]

Not the answer to the questions. Steam defaults to installing into "C:\Program Files (x86)\Steam" on a Win10 box. Usually, the games come under that below the "SteamApps" folder. If this is where Silent Hunter is, no matter the version, Windows will not allow proper modding, and will do partial "roll-backs" of the files. Steam itself is "authorized" by Windows to make changes to your game. If you have "managed" your Steam "Library" to another drive and / or folder for the Silent Hunter installs, great. Things should work fine there. This is probably not why your screen goes to black though, just a contributing factor.

As has been mentioned before, the most recent Windows Update, and any performed after that, can and will delete files from your computer without telling you. Windows 10 devs do not want anything potentially "conflicting" left on your computer that would potentially interfere with the operation of the OS the way ~they~ want it. This includes video drivers and older DirectX version files. They don't just overwrite what is there, they remove any left-overs of old versions. This is why you sometimes have to re-install older video card drivers and / or DirectX v9.0c -AFTER- the Windows Update. Microsoft could NOT care less whether they break something old on your machine, and they seldom do updates after-the-fact that fix what they broke of the old stuff. In fact, if behooves them to do things like this, so that you go out and purchase the latest / greatest of everything, including games. None of the game companies, much less Microsoft, want you playing something that is 12-15 years old, because you are then not out buying something ~new~... Re-installing DirectX v9.0c will NOT overwrite anything new. Windows wont' allow it to. But it will re-install the old 3D library file that the Silent Hunter games need to run their 3D portion of the game interface. Similarly, if you go to a black screen for the menu, which is 2D, you re-do the video driver. This is why THEBERBSTER has been talking about the video drivers and rolling them back. It is so that the re-install overwrites what the Windows Update did to your computer, which was to remove the old "backwards compatible" files. Don't count on Microsoft or Ubisoft to fix it for you, because they most likely won't...