On my HP laptop, the wireless switch is the F12 key, which works fine on my windows partition, but not in Ubuntu 12.04. Ubuntu tells me that the wireless is disabled by the hardware switch (F12), which does not respond when I press it. There is a red light that is on when the switch is off, and it should turn to green when it is activated. I have tried solutions offered elsewhere, including sudo rfkill unblock all. When I input sudo rfkill list all, it says that there is neither a soft or hard block. Thanks!