I cannot find any way in the BIOS of my Acer Veriton M4630G to disable the onboard graphics and enable a PCIe card. The board has two PCIe x16 slots. The PC will start if I put a graphics card in, and the fan will run, but Windows 10 has no clue the card is installed. All that shows in the Device Manager is the original Intel HD 4600 onboard graphics.
Currently running Windows 10, and it shipped with Windows 7. The BIOS "onboard graphics" is Enabled BUT is also grayed out so that it cannot be changed. And in another section, the "Primary Graphics" is set to AUTO, but that is also grayed out so it can't be selected. This remains the same in the BIOS even swapping out two different good graphics cards in the main PCIe x16 slot (one was an nVidia GeForce GT 730 card, and the other an AMD card). Neither card requires extra power, and the fan runs on both. But boot it up and connect the monitor to it (via DVI) and the LCD tries HDMI, VGA, and then DVI, but ends up reporting "no signal" with both cards. Both of these work in other machines.
One other issue I have noted - if I put one of the cards in the second PCIe x16 slot, leaving the main one empty, the PC will turn on, but will not put out any video from either the onboard graphics or the PCIe x16 source. I'm assuming it never even starts to boot Windows with the card in this slot because Windows doesn't complain at all once the card is removed and it gets restarted.
Help! Whoever can help with this will be greatly appreciated!
Below are the other BIOS versions for my PC listed on the site. Can I (and should I) downgrade?
Here's the order the site lists them, from top to bottom:
P21.C1 dated 2019/09/24 (the one installed in my PC)
P11.B1 dated 2015/01/08
P21.B1 dated 2014/04/16
P21.B0 dated 2013/12/34
P11.B0L dated 2014/01/14
P11.B2 dated 2015/05/25
P11.C0L dated 2015/01/08
Thread was edited to add model name to the title