Dell Inspiron stopped detecting monitor thru DisplayLink

[JoeL]

James,

Thanks for getting back to me. Re your questions below:

The Adaptor does display in Device Manager.

The monitor message says "There is no signal coming from your computer..."
The monitor does not display a blue/green/amber LED - or more to the point, I don't know how to get it to do that.

The monitors work fine when connected directly to two different computers. I just cannot get either monitor to work with either computer when I connect them to the Display Link adaptor. I've cleaned and installed the latest Display Link software from the web site. I've got Windows 8.1 on one computer and Windows 7 on the other notebook.

It seems as though the adaptor knows the 2nd monitor is there but is not relaying the signal to it. I have set the display to extend to the 2nd external monitor and I can drag a window (e.g. an Excel spreadsheet) across to the monitor but the screen remains blank and black and the spreadsheet just disappears off screen in the blank monitor.

Cheers,

Joe L