NX9105 Wireless not working

Question

I am using my old hp-compaq NX9105 laptop. I installed 12.04 and upgraded to 14.04.

Problem is that wireless is not working. No wireless is detected. I installed the b43 driver as described here, but no luck.

Please, any ideas? A step-by-step walkthrough would be great!

Here is the output of running lspci -vnn | grep Network

 02:02.0 Network controller [0280]: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller [14e4:4320] (rev 03)

Answer 1

just run following command in terminal one by one:

sudo apt-get update
sudo update-pciids
sudo apt-get install linux-firmware-nonfree
sudo reboot

_{cuted from Installing Broadcom Wireless Drivers}