Connect to the hub by copying and pasting 192.168.0.1 into a browser address bar. That should pull up a log in page for the hub. But don't log in, just click on the link "Check router status" That'll bring up a window with five tabs. All we need is the contents of the three titled Downstream, Upstream, Network log.
Open the Downstream tab. Select all the text (Ctrl-A if using a keyboard), copy it (Ctrl-C), then paste it (Ctrl-V) into a reply here. Post that, do the same for the Upstream and Network log. You'll get an error message when you post the Network log, just click on "post" a second time.
From what you describe it sounds like you've got an upstream noise or power issue - usually they are straightforward to get fixed.
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