Now it is done, although I am a little pussled.
Going through your instructions I get a message saying: The best drivers for your device are already installed.
This is what I end up with:
Driver: Driver date 29.01.2020 Driver version 26.21.14.4219 Microsoft Windows hardware compatibility publisher
Details: NVIDIA GeForce RTW 2070 SUPER
Events:Timestamps from 17.02.2020 Device install, configured (display.inf), started (BasicDisplay)
and 25.02.2020 Driver service added (nvlddmkm), Device installed (nv_dispi.inf_amd64_9
17.02.2020 was when the machine was actually put together and 25.02.2020 was when I began configuring it, including attaching the monitor and installing photo software.
Is this how it is supposed to be ?? I had expected some sign of BenQ in some of the data, but ...
PS: I tried to attach PNG snippets of screen dumps but could not get it to work in Preview, thus the written data.