If the broadcom 802.11 multiband is the built in wireless then I would say yes you need to Enable it in BIOS. How to do that, I am not sure. Here
is a picture of the bottom of your laptop. Under the panel labeled G should be the built in wireless card. My suggestion would be: Uninstall the wireless card from device manager -> shut the laptop down -> flip it over -> take off the panel labeled as G -> pop out the wireless card that is in there -> replace the panel -> flip it back over and turn it on. Let it boot all the way up. Then shut it down and put the card back in. Turn it on and see what happens when it boots. Maybe then it will take the driver.