Windows Display identifying monitors incorrectly

[BobGHW]

I have a dual monitor setup. A Philips 32 inch is my main screen and a HP 27 inch my secondary.

In display my No.1 monitor(Philips) is selected as main display but when I click Identify it shows my secondary monitor(HP) as No.1

All my apps, games open on my secondary monitor.

I have a Radeon R9 380 graphics card and it shows my main display as the secondary monitor. I cant change the display in the Radeon app it just opens up the windows 10 display window.

I have tried disabling my secondary monitor rebooting opening a couple off apps then connecting my second monitor. The apps that I opened then move to the secondary monitor??

Changing the main display to secondary and back to primary doesn't change anything.

Any help appreciated.

 

[Wolfie]

Hi Bob,

try the following link as I don't do it myself.

How to use multiple monitors in Windows - Microsoft Support

Learn how to connect your Windows PC to external monitors and adjust the display settings.

support.microsoft.com

 

[Æþel]

Have you tried changing the connections to the GPU? Most GPUs have a primary, secondary, tertiary... output. From memory, some GPUs have conditional qualities like this: HDMI socket 1 is primary but if the DVI socket is used then DVI will supersede HDMI socket 1 and socket 2. Using onboard video with a GPU can also cause this kind of behaviour, or did some years ago.

 

[Gary A]

As soon as I read your answer, I thought "that sounds smart" - I tried it and it worked. Thank you so much!

I cannot tell you how much time I spent trying to do this through the Windows software. As with most computer problems, the answer seems completely obvious only after I have wasted hours taking a different approach. And then I don't know if I should celebrate or feel like an idiot! Thank you once more.