I just reinstalled my Windows XP. My internet connection works on and off though. It keeps saying that my internet is connected, but none of it works, and I'm conected through LAN. All the other computers work too, this one used to work until I reinstalled XP. Sometimes when I take the Ethernet cord out of the computer, it still says it's connected, and I have to restart my computer to make my internet work. How do I fix this?