which operating system do you have?
also, not sure if it matters but just in case, make sure you downloaded the driver package from the mainboard website of the mainboard you have ... there's 2 for the maximus v formula: one is maximus v formula and the other is maximus v formula thunder fx
i have windows 7 64 bit: when i open device manager and select a device and then right mouse click update driver software there should be 2 options:
1. search automatically ...
2. browse my computer for driver software
use 2. and then browse to the folder where you unpacked the lan driver package from the download page, click ok have include subfolders activated and then click next
this should be it ... either windows thinks you already have the latest driver (... is up to date) ... or it will install the driver found in that subfolder
after that it should show like this in the device manager:
Network adapters
Intel(R) 82579V Gigabit Network Connection
if it still doesn't then either you are doing something wrong or something else is not ok ...
● CaseLabs Magnum M8 ●Enermax Platimax EPM600AWT @ Eaton 3S 700 USV
● Asus Maximus V Formula / ThunderFX @ 1604
● Intel Core i7-3770K ● EVGA GeForce GTX 670 FTW
● CORSAIR CMZ32GX3M4X1866C10 (XMP) 32GB (4x8GB ) DS 9-9-9-24 1.5V@1333MHz
● 2 x SSD Samsung 830 Series 256GB ● 2 x WD Black 2TB ● 4 x WD Green 3/2/2/2TB
● 2 x HP W2207H @1680x1050 ● Logitech G500 ● Logitech Internet Navigator Keyboard
● Windows 7 Ultimate 64 Bit english NON-UEFI + Asus U3S6 2xUSB 3.0 2xSATA 6G