Internet won't work with the Ethernet cable

Ok, I just got talk talk and its set up. The wifi works, I'm connected with my iPod and phone. But the computer that uses the Ethernet cable won't work. It says "unidentafied network"
All the lights are flashing apart from LAN2 and WPS. The cable is fine. It's new . I don't know what to do and I can't get on the Internet on my computer. Please help!
I've turned it off and reset the router so I don't know what to do anymore. I got it today
How do I fix this problem?
My phone worlds fine with the wifi
I'm not a genius with these type if things

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Hi,
As per me, it will better to contact with one of the best wan optimization solution provider like www.wanos.co. They will definitely help you with this. I have recently faced this problem & contacted him. They came & fixed this issue within 2 to 3 hour.
Thank you

It looks there is a fault in your Ethernet cable. So, it's better to replace your Ethernet cable to restore your internet.
https://www.cbo-it.de/shop/Miscellaneous