Have you created a home group to connect the device with your computer?
If your DHCP setting is set to manual, you will need to provide the IP address of your router, the subnet mask, the IP address you want your device to have, and the DNS servers.
No input or modification is required if you have set your DHCP to Auto, your router will provide all the information.
You can go through the manual step listed
under page 29 from the link mentioned below and check.
Method 1:
I would also suggest you to go through the manual which explains the procedure to set up sharing from the media player.