Thanks everyone. Really most helpful but I am OK now. The Problem WAS that when I copied over the original C: to D: some files were left behind which included Autoexe - any way 9 files in all after I did comparisons in half page mode, flipping from C: to D: - it tends to show differences.
Once I sussed that I pulled them over, re-booted and away it went with no further problems.
Thanks again,
IFR