I bought the GA-Z77X-UD3H-WB WIFI motherboard back in June last year, and occasionally used the Wi-Fi when I couldn't connect with a wire.
I have just got a Wireless-N router, and despite being able to connect to it on standard 2.4GHz Wireless-G, I cannot connect to the 5GHz Wireless-N. The 5Ghz network doesn't even show up in the available wireless networks in Windows 7.
The router is working okay because my iPad connects to the 5GHz band.
Anyone any ideas? I can't see any more settings I need to enable on the Atheros drivers so am a bit stumped.
