Hi phishingjimi, and wellcome to Sevenforums.
I just did a google search for your motherboard, and according to this page, Newegg.com - GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard - Intel Motherboards
in the specifications it says your board has 2 LAN ports, both of them have Realtek chipset 8111C :
Onboard LAN :
LAN Chipset Realtek 8111C
Second LAN Chipset Realtek 8111C
Max LAN Speed Dual 10/100/1000Mbps
So the solution to your problem is to go directly to the Realtek site, and download the appropriate NIC drivers from the chipset manufacturer themselves. Realtek
In this page there is a table with a collection of drivers for various operating systems, including Windows 7. You can download either the driver only, which is around 350KB file and install this driver manually, or you can download Auto Installation Program package, 5329KB in size, and run it for automatic install of the drivers.
Hope this helps.