I have a notebook (laptop) and have a 17 inch screen built in, and two main out puts on the rear of the machine, 1x VGA and 1xDVI i have a 17inch CRT monitor in the VGA and works as a second display with no issue however when i have a CRT of the same make in the DVI (with an adapter DVI-VGA) and it wont come up as a 3rd screen.
I don't no how to fix this issue any advice will be appreciated.
Harry McLaren