Hello dear All,

I am absolutely lost and I would like to ask advise. After upgrading to Ubuntu 12.04 my Broadcom WIFI driver stopped working.
I tried ndiswrapper with a windows driver, I also tried activating the driver as in previous comments, I tried also different distributions, but the driver is not active and wifi is not working. My expert friend also blacklisted the driver and reactivated, but no change.

These are the details:
Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)

It shows : wireless disabled by hardware switch. However I triple checked and the physical switch in ON. I switched ON/OFF not working. On some distros it is not even showing this, it just not showing any wireless options.
Else : networking works fine from ethernet cable and 3G stick.

Does anybody have any idea??
THANK YOU IN ADVANCE.