Freezing/Crashing issues

Problem :

Game randomly freezes, resulting in stuttering Audio/Blackscreen. In 3/10 cases I can't alt tab to windows to make a log. CPU/GPU doesn't overheat.

Tried so far :

Full format & clean install, running on lowest settings (getting a 60 + fps)
Running on high priority
Disabling Multicore
Changed the motherboard & cpu.
All drivers are up to date.
Tried D9, D11 and OpenGL.

System Specs :

OS : Win 7 64bit
CPU : Intel Core i7-2630 QM
GPU : Nvidia GT 540M
RAM : 8GB
HD : 150 + GB Free space