Hi,
To help us investigate this issue can you follow these steps:
1. Disconnect the DisplayLink enabled device
2. Uninstall any DisplayLink software
3. Run this tool
http://www.displaylink.com/support/ticket.php?id=297
4. Install v7.5 M0
5. Reconnect the DisplayLink enabled device
6. See if you get the issue again
7. Attach the logs from this tool:
http://www.displaylink.com/support/ticket.php?id=269
This will help us pin point this issue.
Thanks,
James