Well, migrating everything, even the 60Gb of music, from the studio laptop seems to have had a beneficial effect.
No more BSODs.
However, I still have the unexplained drivers issue, in Device Manager:
It’s a puzzle.
There has been no new hardware installed in – or connected to – the laptop.
And yet the message is that a Modem Device driver is either incorrectly installed or in conflict.
When I delete the hardware, in Device Manager, the error message goes away.
But on reboot, the same conflict appears.
I’ll get the Windows drivers disk out of the box in the spare room.
Any day now.