Hi I have a Dell Inspiron 6400 and have been running Ubuntu 12.04.2 LTS alongside windows for a few months. I decided to get rid of windows and move over to Ubuntu completely yesterday and started with a clean install. Since then my laptop won't connect to the wireless network and when I try and use the different fixes online it stops connecting via the Ethernet cable as well. I have the Broadcom BCM 4311 network adapter and I have tried installing the STA driver that Ubuntu suggests. As well as running the terminal commands to uninstall the bcmwl-b43 and then install the firmware-b43-installer and b43-fwcutter.
I'm sure it's an easy fix that I am overlooking but I really need someone's help with this.