win8 on T430s not detecting external monitor

[nsd3396]

Hi,

I am using plugable usb 3.0 docking station on Lenovo T430s. win8 (64-bit).
Initially when I installed the DisplayLink driver everything worked fine for couple of days. But since yesterday, my laptop does not detect external monitor at all when I plugin the cable for docking station. I can still use external mouse and keyboard that are plugged behind docking station, just the display is not working.

I am attaching support files that were generated using support tool.

Thanks,
nsd