Hi,

Here´s some useful advices you can follow to resolve your issue.

Try the below possible solutions one-by-one:

Try restarting your computer and then verifying the integrity of the game cache for Arma 3.

1. Restart your computer and launch Steam
2. From the Library section, right-click on the game and select Properties from the menu.
3. Select the Local files tab and click the Verify integrity of game cache... button.
4. Steam will verify the game's files - this process may take several minutes.

Try all of the possible solutions listed on the Arma 3 Unusual process exit article on the Bohemia Interactive Community Wiki.

Try switching to and playing on the profiling or development game branch. After downloading new data verify the integrity of the game cache. Note that the development branch may contain large and frequent updates, and you will only be able to play online multiplayer on a limited number of test servers.

Something is wrong with your adapter so try to reinstall your DirectX manualy or update your GPU drivers.

Your issue is most likely your graphics card. Perhaps a lack of total available video memory for the game. You can try connect you PC to TV via HDMI and try if problem will persist - this solution is sometimes useful.

As the last solution, you could try to download All in one runtimes tool that will repair Visual C++, Java SE, Adobe Flash Player, Adobe Shockwave Player, Silverlight, DirectX and many more. It´s not certain but it helped in many cases.

Let me know if something helped to you.