I have attached a Arma Bug Report to the Additional Information.
To the bug... I have the feeling its relatively new and i experience it since an update or so, as i havent experienced it all time.
The Game randomly Crashed and says something like "bla bla d3d error - dxgi_error_device_removed"...
Hello.
"bla bla d3d error - dxgi_error_device_removed"
This should be the source of your problem.
Try updating your Graphics drivers, if that doesn't help then revert to a previous older version or try reinstalling DirectX itself.
Ok thank you very much sir !
I have tried the update or downgrade my Graphic drivery, i hope to reinstall DirectX will help now.