Hi,
Are there any devices listed as unknown devices in device manager?
Can you try this:
1. Disconnect the dock
2. Uninstall the DisplayLink software
3. Download and run the Cleaner tool from here:
http://www.displaylink.com/support/ticket.php?id=297
4. Install the latest DisplayLink software from here:
http://www.displaylink.org/forum/showthread.php?t=61888
5. Reconnect the dock
Thanks,
James