Brand new build, LAN on motherboard does will not connect to internet

Hey everyone! I recently bought a new computer, and I'm having trouble with the new p8z68-v pro/gen3 motherboard.

I turned on and installed Windows 7 for the first time, I had everything plugged in, network cable, everything, yet my internet icon still showed a red X, I restarted everything, rebooted everything and went from modem, router to computer, still nothing. I have another computer here, hooked it up and the internet works just fine in the same set up.

I'm trying to connect to the internet, but it says it cannot find the drivers to the network adapter and it tells me to download new drivers, but I can't connect to them to get them.

I tried downloading the driver info on the other computer onto a Flash Drive, and tried putting it onto the new computer, but it won't recognize the flash drive, but it can find my keyboard and mouse.

I could use a little help here, any suggestions?