If you're running Windows 8.1, you can't install the latest Intel drivers for that LAN adapter, it just says no intel network adapters found because Intel failed to add this adapter to the driver
You need to use Windows' own default driver, or check the main thread about this issue, there is a workaround to use a different named driver manually
MOBO - Crosshair V Formula
CPU - AMD FX-8350 @ 4.8GHz
COOLER - Corsair H100i / MX-4
RAM - 12GB G.Skill RIPJAWS X @ 2133MHz
GPU - XFX R9 295X2 8GB
HDD - 2TB Seagate
PSU - Corsair TX950W
CASE - Coolermaster HAF 922
OS - Windows 8.1 Pro 64bit