I have disabled all extra expansions, enabled Run as admin for Arma.exe. I have reinstalled Arma 3, verified, no launch parameters.
Arma 3 Local files via Dropbox: https://www.dropbox.com/s/rh985jpgmzpmu5q/Arma%203%20local%20files.rar?dl=0
Event Viewer file:
Faulting application name: ArmA2OA.exe, version: 1.63.125.548, time stamp: 0x53b16561
Faulting module name: ntdll.dll, version: 6.1.7601.18247, time stamp: 0x521ea8e7
Exception code: 0xc0000005
Fault offset: 0x00038cef
Faulting process id: 0x524
Faulting application start time: 0x01cfd47692c2ade9
Faulting application path: C:\Program Files (x86)\Steam\SteamApps\common\Arma 2 Operation Arrowhead\ArmA2OA.exe
Faulting module path: C:\Windows\SysWOW64\ntdll.dll
Report Id: dfb47bc2-4076-11e4-8359-001fbc08db1e