Thanks for the suggestions Hornus.

Things have actually moved on a bit since… one blue screen proved fatal :cry:

I did go your suggested route at one time, but there are SO many devices on this pc that it became impractical to disable them all and then test one at a time. Also, I’m not convinced that Windows is reporting the devices correctly as most of the information is read from the drivers that windows actually see’s fit to load.

Anyway, it’s a long, long story and I’ve paid my most favourite people in the whole world for support, and they are busy scratching their heads over the problem… good old Microsoft :o :frowning: >:(