Yes, that’s what bothers me, but it seems off that it performs perfectly in Safe Mode with Networking.
I’ve been wondering if it was something as simple as needing the SATA cables of memory sticks re-seating.
The machine is normally left on permanently and hence quite warm all the time, but we’ve been away for a week in Prague; with no central heating in our house, it would have got quite cold and just started to heat up again when it crashed. (It was a suffix 0x000008 stop, by the way- I never did get much more from the video, as it was on screen so briefly and I was only recording at 30 fps)

However I seem to be having a bit of success. Blue Screen Viewer pointed to one of the RAID drivers, but not the one which actually makes the RAID array visible to Windows.
I downloaded a slightly later version from Biostar’s website and forced an upgrade of them all from Safe Mode Device Manager.

System obviously then needed a re-start and with baited breath, I let it.
Seems to be a normal re-boot, albeit with a previous restore point activated, though only from just before I turned it off when we went away last week.

Only trouble is that there are now 3 Windows updates still in the queue to be installed.
I think I might wait until we have the next holiday planned, so that’s set to Notify, but not Download or Install ;D

Next one is to give the thing a good workout with MemTest and risk re-installing Avast.
Do you have any idea why it seemed to prevent Crash Memory MiniDumps?