Ethernet Cable turns off internet

Okay, so i just bought a Ethernet Cable. I plug it into my xbox one and the other end into my laptop. When i do this, my Xbox one disconnects from the internet, and live. I try bridging the connection from my Ethernet cable to my Wifi, but that doesn't work. I
try checking my NAT settings as well, and it just tells me i need a teredo IP address. Does anyone know how to fix this issue? i dont have access to my modem/router, so i cant do anything relating to that.

thank you.

:)

 

How to Connect Internet Cable directly to Xbox 360

Hi everybody.

So recently I've been experiencing a lot of lag on CoD, i.e, whenever I join a game I get 2-bar and 3-bar connections. So I decided to search for some solutions. I read somewhere that I can fix this problem by directly connecting my Xbox to the router using an Ethernet cable. Now the problem arises as I do not possess an Ethernet cable.
Currently, I have a cable through which Internet is supplied (It's a Fibrenet connection, which uses Optical Fibres for transmitting the Internet) and this cable is connected to a router which provides me WiFi.
I was wondering if I can connect my Internet Cable directly to the Xbox 360 without Ethernet cables.
(The cable looks exactly like an Ethernet cable so it can fit into the Ethernet jack of the Xbox, so that problem is covered.)

EDIT : I connected the Internet Cable to the Xbox but when I tested connection, It does not connect to Internet. Help

 

Xbox Live Account

Tried Ethernet cable and it works the internet doesn't turn off and my dad is going to talk to our ISP in a short while.