Very good, 2 drivers to install manually
The machine is (after only 3 weeks of use), very good. It meets my expectations.
As mentioned in the title, I have two little problems with the drivers. I went to the manufacturer's website, retrieved all the drivers I'd installed and then two pieces of hardware weren't recognised.
1/ The Intel network card: the solution was simple, I went to the Intel site and downloaded the drivers. It's a setup and after installation, everything was back in order.
2/ The "unknown" driver: after some investigation, it turned out to be the Thunderbold driver. I downloaded it from the Intel site and as it was an .INF file, I simply told Windows that there was a driver there and it found it.
A little downside: when I opened the device manager a while later, I saw that it was no longer recognised (again, the Thunderbolt) but ajd it's recognised again without any intervention on my part.