C 7000 Nighthawk AC 1900

Thanks to the several community members who responded.  Ultimately, Time Warner concluded the Netgear C7000 was faulty and put that in an email to me.  The modem/router's Firmware had not been updated in 10 months which ordinarily would be done automatically.  However, this particular device would NOT connect with TW/Spectrum for the needed updates.  After contacting Netgear tech support and very lenthy discussions and holding times, Netgear decided to replace my unit and that process has begun.  So for now, the case is resolved (hopefully).  

As a side note, when you realize your device is way behind in Firmware updates the process of resolution can be cumbersum.  It was my initial thought that it was Netgear's responsibility to update the Firmware so I called them.  I was told that only ISP can do the updates.  I didn't believe that frankly.  BUT, I called TW and was told my multiple people that "only Netgear can update a Netgear product that you own.  If we had supplied the modem, WE would update it."  So, I called again to Netgear only to be told that TW must update the modem...they were not allowed to do so. Netgear did suggest I ask for a senior tech.  In my return call to TW, I ultimately got to speak to a senior tech and he confirmed that indeed TW does the update.  If had owned just a router then Netgear would have to update but since I owned the combination modem/router in the C7000 it was their responsibility.  This resulted in the multiple attempts to update...which they had been doing anyway for months.  Upon failure, they documented it for me.  It had been defective from day one.  Though the process was very, very long, I am grateful to TW and to Netgear for ultimately providing what appears to be a solution.