OK here goes, thanks for that BSOD report post.
Ran Memtest all day Saturday that came back clean as a whistle. Ram timinga are 9-9-9-24 2T with 1.8v as are the specs for the ram
corsair Dominator.
Prime came back fine Sunday. Again on all day and even whilst I was streaming the F1 on it at the same time.
Sunday evening BSOD'd again. Turn timings down to 6-6-6-18 1T and all seemed fine. Then a BSOD for DX.
Done a fresh install last night of Windows 7 ultimate 64bit all seemed fine. Went into BC2 to test and got a Bad_pool_caller BSOD when I alttab'd out and closed the window.

Never done that before whilst closing the program like that.
Set Prime up to run all day again whilst at work, came home at half 10 this evening BSOD'd as it was at the login screen. It lasted approx 30 mins before it BSOD'd whilst I was out.
Ran it again this evening, again approx 30min before BSOD
Done the BSOD report and ran the
Driver verifier. The latter BSOD'd 3 times which I have uploaded all 3 .dmp files along with the report
Muggs