Hi there,
First of all this is not my computer but my friends which I tried installing windows 7 on.
I did a fresh Windows 7 64 bit installation and everything was going fine(besides the BSOD problems about the graphics card which I fixed by renaming nvlddmkm.sys which was the cause of the BSOD) until I tried installing the Ethernet drivers.
Specs:
Gigabyte GA-MA69G-S3H Motherboard
AMD Athlon 64 6000+ CPU
4GB 800 DDR2 Memory
585 Watt Power supply
XFX 8800 GTS GPU
2 Seagate Hard drives : 250 GB & 160GB
Windows doesn't even detect the adapter even though its onboard. I've tried installing the drivers from the original dvd (and in compatible and as administrator) with no luck. I also tried downloading the latest lan drivers from http://www.gigabyte.us/products/product-page.aspx?pid=2554&dl=1#dl but it still didn't work. I got a deep sleep error or something.(Which I couldn't resolve cause Theres nothing in network connections, not even the 1394 connection which is also turned on in the bios)
No it does not show in device manager under Network adapters.. actually there isn't even a network adapter subcategory unless I click show hidden devices(which has multiple devices then but no network controller). The only driver with a question mark is the graphics card driver which I will try to install after I get the Ethernet adapter working.
Microsoft did say its 64 bit compatible ( http://www.microsoft.com/windows/compatibility/Windows-7/en-us/Details.aspx?type=Hardware&p=Gigabyte%20GA-MA69G-S3H%20ATX%20AMD%20690G%20Motherboard&v=Gigabyte&uid=GA-MA69G-S3H&l=en-US&pf=8&pi=8&c=Graphics%20Cards%20%26%20Components&sc=Other%20Components&os=64-bit&vd=all ) so I don't know what to do.
I Did check the settings in the bios to see if everything with network was enabled and whatnot.. I also tried resetting everything in the bios to default settings with no luck.
Out of desperation tried adding the device manually through device manager (action>add Legacy hardware>manually>network adapters>have disk..) I tried this with the latest drivers I got from gigabytes website but it didn't even show a device, so I tried the original drivers from the mobo dvd which gave 3 devices.. I tried them all.. each time reinstalling the latest drivers and whatnot to no avail.
I'm Thinking of trying to use the windows 64 bit repair disk seeing as it might be software related seeing as it doesn't even show the firewire adapter
Any other suggestion would be very much appreciated. Help ASAP. Thanks in advance
Download

Realtek Ethernet Controller Driver Win7

Solved Realtek Ethernet Controller driver, i.e. Realtek PCIe GBE Family Controller, not working after Windows 10 upgrade issue fast & easily in four methods DOWNLOAD Home. Apr 27, 2017 - Download and Install Latest Network Drivers from Manufacturer's Website. (Intel, Asus, Acer, Gigabyte, etc) to download the network drivers. I tried installing the LAN Drivers from the CD that came along with my motherboard but nothing helped. I tried installing Realtek Ethernet Diagonostic Utility but nothing. I tried Installing Realtek Ethernet Controller (RTL8111) and I chose Repair and when it's done, the pop up says 'The Realtek Network Controller was not found.