Hi,
First, to get it clear, when i say LAN i mean local area network, not an ethernet problem

I originally had a Gigabyte GA-Z77MX-D3H and i could do anything i needed with it.

Now that i have had the Maximus IV gene-z for a couple of months, i have noticed a couple of things:
Firstly, if i want to host or join a LAN game on my network, i cant. eg. minecraft / borderlands 2
Secondly, i cannot seem to host any servers for any games. I used to be able to and my port forwarding hasnt changed

Im pretty sure i have downloaded all the drivers available and had no issues installing them.

Any ideas?

Many thanks,
zamandguth