Hello,
This solution worked well for me, I am using Windows 8.1 on my Compaq Presario CQ57 which initially came with Windows 7.
Since I upgraded to Windows 8.1, my wireless has been giving problem, yesterday I got a message in Action Center that my system is missing one Hotkey Utility Driver (HP Wireless Button), I downloaded the driver (Approx 3MB), installed and my wireless button became Airplane Switch On/Of.
But, I get this solution and apply it, it worked like a charm.
After I reset the BIOS to default without battery installed, the windows powered on and wireless button turned white, I restarted and it worked same-way.
I turned-PC-off and installed battery again, still my wireless was up and running.
Thanks