NavyLCDR said:
Try booting the computer with one pair of 2 sticks of RAM installed at a time and compare the amount of hardware reserved RAM between the pairs. If it is the same between the pairs of sticks, you know it is software or a setting somewhere. If the amount of hardware reserved RAM changes then you know you have a bad memory stick.
Great, another thing I could try, which I haven't, however I have run these memory sticks through Memtest86+ and they came up trumps!!