(1) Is Ethernet adaptor work properly? Get into "Device Manager" from "Control panel", "system", "Hardware". Then find the Ethernet adaptor. If it works, then you should not see any yellow "!" with it. Otherwise, uninstall driver and install correct driver again.
If you cannot find it in Device Manager, you need to get into Bios set up, go to integrated device and enable ethernet adaptor.
(2) Once Ethernet adaptor working, you need to check setting for it. Just right click in network adaptor and open up TCP/IP setting screen and set "Get IP address automatically".
Steps I described maybe not exact, but these are basic idea.