Two Nvidia graphics cards problems and USB to VGA not working

[MIRKOSOFT]

Hi!

I have PC with Intel Core i5 with integrated Intel HD Graphics 530 which supports up to 3 separate displays.
I have connected also Nvidia GeForce GT 710 which supports up to 3 separate displays.
I'm using 6 displays for comfort work, but need else one for side info (monitoring tools etc.).
So, I got from friend older Nvidia GeForce 9500 GT which supports up to 2 separate displays + one mirroring.
Problem began after computer start and Windows 10 Enterprise 20H2 disabled all three devices, so I had only single screen.
I tried to update drivers, finished and reboot - even bigger problem - flickering screens and I must to go into safe mode.
There I tried to disallow 9500 GT and reboot. Helped not, even it was disallowed and hardware scan it scans not at boot, but the same problem.
Last chance was to disconnect card from PC and I own very old USB 2.0 to VGA adapter. I used it to reach 7th display.
Problem was with driver - on CD packed with, was old for Windows 7 version 1.0.0. I found update to version 1.0.9 for Windows 8/8.1 and at least it identified device msusb to MS USB 2.0 Display. When I connected VGA cable in display settings was monitor found.
But always at trying to extend desktop it disconnect display. So, I was searching the web and found version 2.0.2 with Windows 10 support. Still was the same problem with disconnecting. So, I tried to install driver from internal list and now I knew what I'm searching, found and updated.
All was looking correctly, desktop extended and after next reboot monitor disappeared from display settings and detection helped not, it is only in device manager.

My Q is very simple:
How to solve two Nvidia graphic cards conflict or USB to VGA problem?

Thank you all for each help, reply or comment.
Miro

 

[ChatGPT]

Resolving conflicts between multiple graphics cards or adapters can be tricky, especially when trying to use a mix of older and newer hardware. Here are some steps you can take to troubleshoot and potentially resolve the issues you are facing with the Nvidia graphics cards and the USB-to-VGA adapter:

Nvidia Graphics Cards Conflict:​

• Driver Conflicts: Ensure that each Nvidia card is running on the latest graphics drivers compatible with Windows 10. Older Nvidia cards like the 9500 GT may need legacy or specific driver versions.
• Hardware Configuration: Check if the Nvidia cards are correctly seated in the PCIe slots on the motherboard and have sufficient power connections if applicable. Verify the BIOS settings related to graphics card detection.
• BIOS Settings: In the BIOS, review any settings related to multiple GPUs or force the system to primarily use the integrated graphics or the specific Nvidia card you prefer to boot with initially.
• Device Manager: In Windows, confirm that the devices are recognized in the Device Manager without conflicts or errors. Uninstall all Nvidia graphics drivers, restart, and then reinstall the drivers one by one.
• Nvidia Control Panel: Use the Nvidia Control Panel to configure display settings and troubleshoot any specific issues related to multiple monitor configurations.

USB-to-VGA Adapter Issues:​

• Driver Installation: Ensure that you have installed the correct driver version for the USB-to-VGA adapter compatible with Windows 10. Check the manufacturer's website for the latest driver updates.
• Port and Cable Issues: Verify the USB port connectivity and the VGA cable connections. Try using a different USB port or another VGA cable to rule out potential physical connection problems.
• Power Management: Disable power-saving modes, such as USB selective suspend, in the Windows power settings to prevent the USB adapter from disconnecting due to power management settings.
• Compatibility: Verify if the USB-to-VGA adapter is compatible with Windows 10 and offers the desired extended desktop functionality. Some older USB graphics adapters may not fully support modern multi-monitor tasks.

By systematically troubleshooting and applying these steps, it can help you pinpoint the root causes of your graphics card conflicts and USB-to-VGA adapter disconnection issues, allowing you to configure your display setup effectively.