Thanks for the suggestion to use speed fan. I probably typed my post 3 or 4 times before I got it out without the computer turning off for no reason at all, that I can detect. I already use speed fan and I keep a small fan pointed right into my laptop's cooling vents on the left hand side. The temperature is NOT the issue, but that was a good guess. It is running around 55-65C for all the metrics. I know that is a bit on the high side, but not alarmingly so. I have it running, normally, at my home in the docking station for sometimes a week at a time without shutting it off. I have the fan there, but even when I have not had the fan, I haven't had these problems.
It's got to be something else. Although, I must say, my laptop has been up now for about an hour without shutting off. I didn't do anything to make this happen, but I'm not complaining either.
Anyone with any other suggestions? I can't seem to do a Windows 10 repair as an option. That seemed kind of strange.