Hi, thanks. For a moment I thought there was a chance of having solved it, but no. Probably after installing the driver above, I noted Windows Update offered the graphics driver update and the nForce controller. So I accepted those, and restarted. The graphics driver is now back to a 2013 version.
Here's the detail: (Note the reference to 'a new device attached to your computer').
1. Windows Update shows nothing.
2. From Action Centre (Download and install a Driver Update):
Control Panel\All Control Panel Items\Action Center\Message Details
This solution could not be downloaded
Most likely causes:
Your computer was unable to download the solution at this time. Check to make sure your computer is connected to the Internet, and then try to download the solution again later.
3. Then View all problems this applies to:
The solution applies to these problems
Solution: Download and install a missing driver
Received: Please wait while the information is prepared
Source Summary Date Status
Driver software installation Could not find driver software 04/02/2013 10:20 Solution available
Driver software installation Could not find driver software 04/02/2013 10:20 Solution available
Scripted Diagnostics Native Host PnPDriverNotFound 04/02/2013 10:34 Solution available
Scripted Diagnostics Native Host PnPDriverNotFound 04/02/2013 10:20 Solution available
4. Click on Driver Software installation
Could not find driver software
Description
Windows detected a new device attached to your computer, but could not find the driver software it needs to make the device usable. Each device manufacturer typically includes driver software of a CD that comes with the device, or as a download from its website. The hardware ID of your device is PCI\VEN_10DE&DEV_0753&SUBSYS_360A103C&REV_A2.
Problem signature
Problem Event Name: PnPDriverNotFound
Architecture: x86
Hardware Id: PCI\VEN_10DE&DEV_0753&SUBSYS_360A103C&REV_A2
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 2057
5. Click on Scripted Diagnostics Native Host
PnPDriver NotFound
Problem signature
Problem Event Name: PnPDriverNotFound
Problem Signature 01: x86
Problem Signature 02: PCI\VEN_10DE&DEV_0753&SUBSYS_360A103C&REV_A2
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 2057
Extra information about the problem
Bucket ID: 166049771