okay thats very strange then, because goverlay would not be doing much without displays. try to disable both displays in lcdsysinfo2.8 > settings > enabled (to disabled). Same on 3.5 configuration > goverlay vr and output to disabled.
see if it crashes then. if it does. further disable all plugins. if it still crashes, do you have aida64, openhwm, siv, teamspeak, skype or mumble on your computer when it crashes?
Of all those I have aida64. I have just reformatted for a other issue that i had come up with the computer. Setting it back up now, will see if that has a change.