Cleared my event log early this morning and came home to see all this....I have a Netgear C7800 gateway & not sure of why I am seeing these warnings on a consistent basis. This is from a 12 hour period today.
I checked from this end and the levels all seem fine and the while most of those events listed are non-issues they don't appear to be repeating. Are you seeing problems with both wired and wireless connections?
They unfortunately repeat often and daily, I cleared my log to actually see what happens during a single time period. I get Dynamic Range Window violations several times a day along with the others listed. I was told on another site that my downstream levels are not ideal and could be tweaked & my upstream is close to being too high due to SNR issues in my line.