Started getting BSODs so video drivers have been put back to the original OEM versions:

Intel HD Graphics = 8.15.10.2345

NVidia GeForce GT 525 M = 8.17.12.8577

Hmmm.  Interesting that the Intel HD Graphics driver was 8.15.10.2455 to start this troubleshooting process.  I wonder where that puppy came from.