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Windows 7: Two monitors question

13 Aug 2019   #1
F22 Simpilot

Windows 7 Ultimate x64
Two monitors question

I use two monitors. The main larger monitor is connected via HDMI. The smaller monitor is connected via DVI. When I boot my computer, it is the DVI connected monitor that shows the BIOS password login and Windows startup. Once Windows starts both monitors are on.

Why is that and can I change this behavior?

My System SpecsSystem Spec
13 Aug 2019   #2

Windows 10 Pro x64 1909 - 18363.657 XP/Vista/Win7/Win8.1 in VM for testing

It's due to the way that the Graphics card allocates the priority of the connecting ports

To sort it out, with nVidia as It's all I every use - goto the nVidia control panel - Setup Multiple Displays - Right click on the screen icon you wish to use to login and select Make Primary.

I am assuming the other manufactures of graphics cards will have something similar
My System SpecsSystem Spec
13 Aug 2019   #3

Win7 pro x64

the default boot order is DVI > HDMI > Displayport if you have more than 1 display connected to one pci-e video card, so its acting like it should. There is no windows setting that will change this since this is a boot setting, regardless of your primary windows monitor.

As Barman said, there might be a setting in your nvdia control panel to fix this.

If not, sometimes disabling csm in bios, or turning off fast boot, or turning ON fast boot, will fix your issue

If that does not work, you could use a displayport-to-dvi OR an hdmi-to-dvi adapter with your dvi cable to connect your dvi monitor to a hdmi or displayport port on your video card, which will remove the video card's dvi port from being used
My System SpecsSystem Spec

15 Aug 2019   #4
F22 Simpilot

Windows 7 Ultimate x64

Well, looking at the control panel, I see this monitor is already set to primary. And I have a felling it wouldn't matter since that would be a setting when Windows takes over. It probably is a setting in BIOS or the connector then.

Reading here, I may not want to disable CSM since I don't use UEFI in order to use Truecrypt which doesn't support UEFI. boot - What is CSM option - Super User

I do have fast boot on. I'll try a normal boot and see what happens.
My System SpecsSystem Spec
19 Sep 2019   #5

Windows 10 64bit

Thank you. Barman58! I didn't know that Nvidia has such settings. This made my day. I also have similar problem with Simpilot, and your solution is working for me.
My System SpecsSystem Spec
19 Sep 2019   #6
F22 Simpilot

Windows 7 Ultimate x64

LOL I have yet to turn off fast boot. I doubt it will fix the issue though. I'll try it now.
My System SpecsSystem Spec
19 Sep 2019   #7
F22 Simpilot

Windows 7 Ultimate x64

Nope. Turning off fast boot doesn't change the monitor used.
My System SpecsSystem Spec
03 Jan 2020   #8

Windows 7 64 bit

I have been using 2 monitors for 15 years. When I upgraded to an HP Touchsmart 300 in 2011, I bought a USB to serial plug with an in-line 2.0 graphics card, as recommended by the gurus at the computer store. It connects to an HP w2338h flat monitor. This PC model is the beta model and so does not have the capability to add another on-board graphics card.

So for 9 years, I have been using this set up without much problem. But today, the second monitor froze while I was using MS Word, and also froze both keyboard and mouse so I could not windows+P to get them on one screen.

I did a cold boot and tried again. Same deal. ON the third reboot, I turned off the second monitor and sent all window functions to the main screen/PC. The PC has not crashed since.

Do I need to purchase a new cable with an inline graphics card? Do they wear out? Can the IT guys test the card to see if it is working properly? Do I need to unplug the cable then plug it back in to "reset" it?

What is the best way to diagnose the problem?
My System SpecsSystem Spec
03 Jan 2020   #9
F22 Simpilot

Windows 7 Ultimate x64

Why don't you start your own thread.
My System SpecsSystem Spec

 Two monitors question

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