[DonaldM]

I know this is basic, but its something I've done myself over the years, even though I know better...but make sure the keyboard is turned on and the MIDI USB recognized by your computer BEFORE you boot up PT. Otherwise, PT will not "see" your keyboard properly...assuming you've set it up properly in PT to start with. If you boot up PT and then connect or turn on the keyboard, PT will not see it.