Okay so built my computer couple of months ago and i have only ever used CAT 5 network cables, recently tried using a CAT 6 network cable and my computer doesn't recognise that there is a network cable plugged into it. I've tried uninstalling drivers and following any troubleshooter i found while google searching and nothing fixed it, plugged CAT 5 cable back in and worked instantly. I have an ASRock H1110M-HDS Motherboard. anyone got any idea why it isn't working. I have 4 different network cables to try from and none have worked and all work in another computer.