Sooo basically I live in a college dorm and have been using ethernet the whole time I've been her then out of no where my computer will not take my ethernet cord anymore. In fact it will not take any ethernet cord. I've tried my friends and no luck, they try mine and it works. So it is obviously my computer. I plug it in, and it doesnt detect it, it just says ethernet not connected. What do I do? I got the latest Macbook pro with snow leapord. I take care of it, I didn't drop or anything it just stopped working. Any ideas how to fix it?