Thought I'd give you an update on this and share my grief, sorry I mean findings. After battling for a month trying to understand why I'm getting an ati2dvag.dll system crash, and following all the internet advice about installing latest drivers, and how ATI and Microsoft can't get it together and come up with a driver solution

I decided to upgrade my power supply from 350W to 480W. All is sunshine and light (apart from the weather outside!!!!!). I am now back in the SHIII world of realism

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The card I have is an ATI HD3650 which has a minimum requirement of a 300W power supply - That is not accurate. I had a 350W power supply and this could not drive the card. Its quite amazing really that everything works fine until 3D kicks in and then only a certain part of the system shuts down leaving hard drives, fans etc still running,. You would think that if the power supply couldn't hack it, everything would give up the ghost!!
MLF