HI Mike,
Awesome! That works. Thanks so much. If I disable the GTX 980M (Under Display Adapters in the Device Manager) everything starts to work. Seems strange though; surely I want to be using my beefy graphics card rather than the base one?
At least I can now use Sketchup and know for certain the graphics card is the issue. If anyone has any suggestions on how to get the GTX 980m working I`d be pleased to hear them.
Pete