No WiFi for Windows 8 Partition?

Once upon a time, I thought I was good with computers....

Anyway, I recently bought a Macbook Pro (15 inch, retina) and I installed Windows 8.1 onto it via Bootcamp Assistant. Windows installed, but the WiFi isn't working. I installed the Broadcom Windows 8 x64 driver, but there's still no option for WiFi. It's like the computer is only looking for an internet connection via an ethernet cable...

Is there anyway to fix this? WiFi works perfectly fine on the OSx partition. It seems like the computer is not recognizing the driver although I get a dialogue that says it installed successfully.

I might take it into an Apple store to try to fix the issue...