Hi, thank you for answer.
Modem Earthlink series - we use fiber service.
Unplugging and rebooting doesn't change situation.
Globe LED is green.
Clicking Internet icon, router has IP adress, mask, gateway, DNS addrs from ISP. IP is static and private - exactly 192.168.70.30. GW 192.168.70.1 . Old TPLink does its job with that.
DNS servers are: main from ISP, second from Google 8.8.8.8
No ping. If modem is switched off - destination unreachable. My laptop configured with static IP (192.168.0.50), GW on LAN side 192.168.0.1
What i can do more?