Thank you for your response! I do not use a router, only the cable modem provided to me by Suddenlink. (I tried to use a router, but found I just did not have the ability to configure it.) I have been using modem only for nearly 20 years, and have only had a problem with losing connection once before, back before I was using Chromebox. Suddenlink gave me a new modem, and all was well. All was well even after I started using Chromeboxes, until recently.
This all started when Suddenlink started having multiple short outages of internet only (didn't lose TV or phone). During that time, not only my chromebox, but even my other two Windows computers would lose connection briefly (minutes) and then come back up.
Then, the other day, there was a complete outage of all 3 of my Suddenlink services for several hours overnight. When it did come back up the next morning, my Chromebox would no longer connect. My Windows laptop and desktop could connect just fine and do not lose connection. But the chromebox could not connect to ethernet. It would "turn on" the WiFi connection (which I keep turned off, because I don't have WiFi) and would look for WiFi connections. I would turn off WiFi again, but it simply could no longer establish an ethernet connection. Not only did I check all connections and cables, and run "network diagnostics", but I even hooked up my old chromebox, and the same thing happened. However, I could bring my laptop to the location where my Chromebox is, and use that ethernet cord/connection, and my laptop would connect just fine.
I have done everything I can do, short of Powerwash. I do not think it is an issue with the Chromebox, given that it happens to BOTH chromeboxes. (The older chromebox still worked just fine, but it had gone "out of support" and was no longer receiving auto-updates, so I bought the new one, which will get updates through 2025.
At this point, I am wondering if somehow, my provider is BLOCKING my Chromeboxes????
Another weird thing is that when I check "connected devices" in Chrome settings, it says "Android Phone" is the connected device. I don't understand that, since I don't even HAVE a smartphone of any kind, and Chromebox is the only Chrome device I use.
I do plan to contact ASUS tomorrow, and try to get some help.
Thanks for the video, and for taking the time to answer! If you, or anyone else, has any thoughts, I hope you will let me know. I am beyond frustrated. I am vision impaired, and REALLY need the use of the Chromebox on my big TV.