Hello all
Think I have found the solution, this at least worked on one of my clients Microsoft Windows 7 laptops which was experiencing this issue.
Use this guide to run troubleshooting on Aero theme and reset the Aero theme settings:
https://www.youtube.com/watch?v=0q2kso8K6Zg
I think the change that the troubleshooter made which made all the different was changing the display adapter from High Colour 16-bit to True Colour 32-bit. If I am right this change can be made manually:
