Wireless Internet not working?

I have a lop top I live in a apartment that offers free Internet. I teared on my computer to go on the Internet it ant working at all. I called the Internet places they said its working fine. It shows on corner of screen that something's unplugged witch is not since don't have a house phone. Pulse looked around looks like a rectangle peace is missing from side of computer. What is the problem how do I get Internet up and running again. I using my iPhone to write this.

Your internal laptop wireless card has failed. In this case, you will have to buy another one to replace it. They are very cheap if you buy them from online stores such as E-Bay or stores that can be found through Google Shopping. It is about the size of a credit card, and usually has easy access through a panel underneath the laptop.