Checked but setting was already enabled. Turned off and back on, no change. I really think the issue is why it doesn't get populated onto the AUTO-PLAY list. My Panasonic camera is on the list so it's possible.
OK, I have a workaround. Talked to Canon customer support, and they were extremely knowledgeable, but this falls under the category of known problems for which they don't have a solution. For whatever reason, the Canon items don't get populated into ...
Hadn't heard there's any difference in Windows 10 installations or issues with old PC's. Regardless, this PC is only 3-4 years old, Intel I7, and fresh Windows install. I don't reboot very often, but I'd forgotten that that the aberrant EOS splash s...