NIV versus Arris DG1670 (Wireless LAN) Modem

This evening I installed an Arris DG1670 (Wireless Lan) Wi-Fi modem to use at home with my laptop & Apple TV, and now NIV is telling me I'm "at risk".   NIV cannot repair the problem - and it doesn't give me so much as a hint at what the network issue might be.   The problem presented itself after I rebooted the laptop.

I use it with a 2013 Macbook Pro laptop - the software worked flawlessly until I hooked up the modem.  Obviously there's a network issue but NIS can't tell me what it is. 

Anyone have an idea for a solution?