Computer doesn't see the MTi2

I set my MTi2 up and it was working well, perfectly in fact, but when I restarted my computer the computer no longer sees the MTi2.  I've checked the USB and HDMI cable connections and they seem to be fine.  Both cables are brand new and short and were working perfectly a minute earlier.

Turning Raven on and off does nothing.

Launching V Control, ProTools 12 and then Raven doesn't help.  It only attempts to run Raven on my Mac Retina monitor.

I'm at a loss?