I have a computer with windows xp installed and it doesn't have wifi, so I have to connect via ethernet, but when I plug the ethernet cable in the computer it doesn't connect to the internet. I have checked the cable with other computers running windows vista and mac computers and both get connected, but the computer running windows XP doesn't. The computer should connect to the internet the moment I plug in the cable, because that's how I used to connect a few years back, but this time, I plug in the cable and it doesn't work. What should I do? Should I change the connection? Thank you.