This issue is solved, khanopus was helping me with my motherboard.
I have included here what I did to install the lan driver so future users will know what to do.
These instructions in the other post did not work for me because it wasnt as detailed: viewtopic.php?f=150&t=116490
If you try to run the script in the terminal (scripts/driver-select alx) it will say permission denied.
The driver should be in your home folder and not on any other folder or harddrive, you also have to use the terminal to extract the tar.bz file.
If you have Atheros AR8161, follow these instructions:
1. download the driver here https://www.kernel.org/pub/linux/kernel ... -u.tar.bz2
2. copy the downloaded file to home folder
3. go inside home folder, right click, open terminal
4. type these into the terminal:
tar -xvf compat-drivers-2013-03-04-u.tar.bz2
sudo make install
sudo modprobe alx