The problem has only been happening for two (2) days. In that time the only thing that has changed to my knowledge is Steam updated. And the problem has only been since that particular update but that maybe only a coincidence.
I have not updated my OS, Graphics card, network card, anti-virus/pop-up software or any in-game settings in a week.
I have minimal background programs running, but they are:
Jabba/Pidgeon, Firefox and Chrome, various Windows folders and both Teamspeak and Mumble. These programs have also not been updated.
I have tried disabling all of these programs but the game and Steam still crash.