[...] so it has to be something like hardware or software that on his/hers computer that's not allowing those games to run maybe it's a video codex [...]
Hardware/software, yes, but not because of the video.
The log stop before the graphic initialization, at this time Ren'Py don't even know that there will be a video to play.
The problem is that the log stop in the middle of a line...
Suddenly there's something so important that Python don't even finish to sent the line to the OS API that will write the line, or something like that.
What come after this line in Ren'Py init process is the first display of the screen, as part of the code searching what Renderer it should use. But I doubt it's the problem, this part of the code haven't changed since years.
It's also not due to the GPU. I mean it make no sense that it's the problem since it works with the version of Ren'Py that are more advanced, and not on the version that, by default, still rely on the historical renderer.
The only "obvious" difference between the 7.3.5 and the 7.4.0 is that Ren'Py changed the version of Python it use. Ren'Py 7.3.5 rely on Python 2.7.10, while Ren'Py 7.4.0, and further on the 7.x branch, rely on Python 2.7.18.
But it's not the version of Python by itself. Ren'Py use the 2.7.10 since its version 6.99.6 (september 2015), it would be known since a long time if it had an issue.
I also doubt that it's an incompatibility between Python 2.7.10 and Windows 11. There's surely not many people still using Python 2.7.10, but there's tons of people playing Ren'Py games using this version of Python. If it was specific to Python 2.7.10 on Windows 11, there would be more error reports.
There's reports, it's not the first time I see a log that stop a this exact place, but it's relatively exceptional ; too exceptional to be something generalized.
Outside of the code itself, the difference between the version of Python 2.7.10 and 2.7.18 that Ren'Py use is that the version 2.7.10 have most of its code store externally in a DLL, while with Python 2.7.18 everything is embedded in the interpreter exe.
But once again why would it be an issue ? If it was a question of rights, Python wouldn't works at all. It's also not a question of writing permission, since there's content in the log prior to this...
But well, my guess is that the error is due to Python more than to Ren'Py.