Display No signal W8.1

[Wadoadi]

hi
dell inspiron i5 with Dell USB docking station.

Dock was working ok but all out put was lost to monitor connected via DVI port.

Windows shows the second monitor as VGA!

Powered down USB3 Dock same Issue.

Powered off laptop and Dock, same issue

Tried HDMI port same issue.

Tried second USB3 port on laptop same issue.

Uninstalled the Displaylink 7.7 driver rebooted re installed driver, re attached USB dock, system requested reboot, rebooted, all working OK

Is there an easier way to get this working when if it happens again?

thanks