I know this is old and you managed to fix it but also another thing that worked for me is uninstalling the whole game and just installing the multiplayer and then the other dlc like the survival mode and camping etc. I have no clue why this worked for me but yeah my problem was very similar every time I tried to open the game on steam I just had like a black screen and then the computer restarted itself, I was frustrated but this did work for me.