You can write any sort of detail here, i think it could benefit other affected people with old NVIDIA GPUs (that i suspect will appear here on the forum sooner or later).
The new BIOS versions just came out, so there will be a gradual increase in people with old graphics cards updating their board's BIOS and running into this problem. We are on the frontline of this development, people are just as likely to post on this forum as they are to report it to MSI straight away. And here on the forum - without trying to blow my own trumpet - other people didn't really make the connection between Secure Boot being enabled by default and an old graphics card without GOP resulting in this issue.
So i think it will take MSI some time to realize what's going on, they don't seem to test new BIOS releases with old hardware, and they first have to find the common denominator. In that all users that report such problems will be using a GPU that's missing a GOP in its firmware. Hopefully my thread can accelerate that realization, but i think the only fix from MSI's side would be to backpedal and revert back to Secure Boot being disabled again in a newer BIOS, or not to fix it and just add a warning, as you say.
