I would say the most basic thing is to make sure your laptop wireless is turned on and your Ethernet cord is not plugged in, then make sure you have the
exact password typed in.... go to PCC and remove any setup you have configured, restart your laptop, and reconfigure your connection.
If it still doesn't work, then we need to know a little bit about your hardware specs....
type lspci in a terminal and copy and paste here....
If you've tried all that already (you didn't say what you had done) then just post the terminal output and we'll try to help. I'm sure someone else will post with additional requests.....
