I just got a new computer and can't get it to connect to the internet. my home already has an ethernet system with 2 computers that are online. I tried to connect mine, but it wont even register that there is a connection. All i had to start with was a bunch of multicolored cables which I had to wire to different spots. Im pretty sure I did this part right because the other computers are the same way in my house. What could my problem be?