I've had a perfectly serviceable monitor set up for some time now under W8.1
Monitor 1. DP to Dell U2713HM
Monitor 2. DP to Samsung 2494 HDMI input
Monitor 3. DVI to Optima PJ HDMI input
As the title says, this has worked fine since the graphics card was installed. I upgraded to W10 today and cant get the DVI to PJ working at all.
Any suggestions appreciated please.
Sounds like an incompatibility issue with Windows 10. My suggestion would be to try a different adapter type.