and there in lies the issue. YOU never told us you were using a dual video card setup
That’s true. But it is because I didn’t know it was enabled as there is no monitor connected to the intel graphics output.
I was only prompted to check when reading the post I linked to whereupon I found that intel graphics were enabled.
IMHO this is something that the installation process should deal with because my setup isn’t particularly unusual.
Let me thank again all of you who made positive contributions.
Thank you for the thread. It’s been immense help (Asus Z87-Pro, i7-4770, GTX 1050Ti)