Internet connection problem throug Laptop Network port

Hi All,
at my home, i got internet connection from coaxial to my modem..
i had tried couple time to hug up internet from Modem through Wan port to my laptop network port by RJ-45 but the internet status said not working(yellow sign at the network icon on task bar".
I tried 3 of my laptops, but still problem..

My deep wonder, i switch laptops to desktop by the same way, internet is working fine..
What is the problem? i really wonder so much...
I don't think all my laptops Network port are problem.. all of them are new

Best regards,