Yes, it is definitely possible Avast! was not the problem. I was grasping at straws for ya because the crash dump only showed a small fraction of drivers. I mentioned the only thing I was able to. In any case, you're in a better position now probably, to post a new crash dump if and when it happens. It's likely a RAM or hdd problem. Update your video card driver to latest from NVIDIA.com or game.amd.com, depending on your card brand.