Sorry, yes, evidently stuff has come up, lol. I've been busy with several projects. I still have your memory dump file, and will try to get to it at earliest convenience. This should not stop you from pursuing Lenovo support on this problem, as it may end up coming to that.
The pattern though of having large bouts of BSODs for a couple day period followed by no symptoms for several days is pretty odd. Is there anything different going on with your PC during those moments, such as a program you run temporarily or some other activity?