I am giving up this topic, this has turned into a really weird problem that I think is related to the USB system or circuitry on my laptop. The 1600 works, then it doesn't. its recognized as USB 3 and then recognized but marked "device cannot start" and then it works again. Not all at the same time, but as I go about trying to track this down.. At least, the ASI1600MM is innocent
It works fine on 2 other computers, a big desktop and an old, slow laptop. Maybe conflicts with my 120MM guide camera, sometimes but not always. Gosh.
That is all of this, from me.