I have tried swapping the cable in as much as from one PC to the other and on the original PC it is fine, new PC not fine.
In device manager there are no yellow ? or ! and under netwrok adapters the only one present is: Realtek RTL8139/810x Family Fast ethernet NIC, under the properties for this it says it is working fine and the settings under advanced are: Link down power saving:Disable Link speed/duplex mode:Auot negotiate Network address: Not present Optimal performance:Disable Receive buffer size: 64Kb Wake up on ARP/PING: enable Wake up on link change: disable Wake up using APM mode: disable