philo wrote:
I mentioned about a week ago I built a new machine using an Asrock
J3455M mobo.

Got it all working using Win7 and a standard VGA output.


I then decided to use the DVI-D output rather than VGA and get no
signal at all.

I am using a DVI-D cable and confirmed it works because I can put in a
(junkbox) PCIe video card and it will drive the monitor.

My monitor is an old Sceptre X9S-NAGA which specifies simply DVI or VGA
input.

Is the monitor too old/ non-compliant in some way or is the port on the
mobo possibly bad?

Well, you know what the theory is. That the DVI port should
continue to be compatible.

Even if the Sceptre didn't have an EDID, both ends should be
willing to do 640x480 or 800x600. It should light up, even if
it doesn't run at native resolution.

Paul