After I followed all nvidia card requirements thread it didn't work and I was quite sad, but then I decided to try compatability mode but I thought nah I will just try run as admin and it worked no more crashing now. Hope this helps for all of you :)
---------- Post added at 07:14 PM ---------- Previous post was at 07:14 PM ----------
The crashes was the one where it goes to desktop and says ARMA 2 Operation arrowhead stopped working