R700V2 drops internet connection right after restart.

[hsguron]

This router was working from rom last 6 months. Suddelnly one morning 3 days ago it dropped inter connection. All devices shows strong WiFi signal but no internet. I restarted the router and it worked for a blink and then again same thing. I tried many times and also reset didn't help. Even in the default mode still same issue. I have few devices connected via LAN ports. Those devices also no internet excess. 

This router is not even 7 months old. Anyone else is having this issue?

[FURRYe38]

Ensure there are no coax cable line splitters in between the modem and ISP service box. 

Ensure you using good quality RG6 coax cable between the modem and ISP service box. 

Contact the ISP and have them check the signal line and quality up to the modem and check there logs for any disconnections on your line.

[hsguron]

Thanks for your reply!

There is no Co-ax cable. It is connected to a AT&T Uverse Modem via Ethernet cable. I tried my old router and it worked without any issues. 

[FURRYe38]

Please post about this here for your model router:
https://community.netgear.com/t5/Nighthawk-WiFi-Routers/bd-p/home-wifi-routers-nighthawk

Modem Combo Units:
Couple of options,
1. Configure the modem for transparent bridge mode. Then use the NG router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the NG router gets from the modem.

Good Luck.