Problem remains unsolved, though I had a nice online chat with a patient and helpful Intel tech. I've updated the drivers for the ssd drive as well as the bios on my laptop. It turns out that Intel’s Rapid Storage Technology applet sees the drive fine. So does SSDLife Free, which assures me that my drive is in excellent health, should last until 2020, and has Trim enabled. But even though it's clear that the drive is there and is willing to explain itself, Intel SSD Toolbox still can’t see anything on my system. The Intel tech and I agreed that this is very odd. For the moment, I’ll just live without Toolbox.