D54250WYK Network Disconnected

Hi

I am trying to install Window2012 server on an D54250WYK.

I have updated to lates bios, (WY0035) - but are not able to enable the Network.

If I try to simulate a boot trough the Network adabtor, and it seems that the syetem use the Network adabtor since the lights are flashing.

When I enter the Bios setup -> Devices -> Add-In Config - the device shows when the Network cable are connected or not - but the Bios still shows "Network Disconected"

I am not able to install the Network driver as it says "No adabtor found"...

Plkease help - please..