I had this problem and it was solved by connecting via Ethernet,
then do a full system update
then
then reboot,
then run following
see if it springs to life.
then do a full system update
Code:
sudo apt-get update
then
Code:
sudo apt-get upgrade
then run following
Code:
sudo apt-get install firmware-b43-installer b43-fwcutter
see if it springs to life.