Thank you both.
@unknownuser said:
So it seems to be a video card/driver issue. Note that integrated chipsets will almost certainly NOT work well with SU (they are simply for some basic office and internet browsing tasks, not for something that needs full support of OpenGL).
There seems no helping it, the card won't co-operate. Several hours of frustration, and display crashes followed by sad acceptance. Strange since I think I remember using SU6 on it before ...The good news is that the Battle-Ax in the basement has a card that is working OK so far.(I refer to an old PC, not my wife)
Thanks again I will surely be utilizing this fine site and I'll have plenty of questions.
Ed