I played Arma 4 days ago, now when i start it, it crashes.

I launch it from steam, the Arma 3 Launcher comes up (nothing wrong here)
then i hit play, the game starts but is a all black window, not reponding, after a few seconds it stops/dissapears then in steam liberary it says running then syncing 0% -> 100% then nothing.

I have've gotten two diffrent error messages: 0xC0000005 (Status_Access_Violation) and 0xc0000409

I have tried alot of things, reinstalled the game, verified it, uninstalled visual c++ 2013, diabled my antivirus and firewall, run as administrator, removed all mods. ETC