Interesting. Didn't think of that. I just assumed they work on their own (like hard drives do). I'll see if it happens - and failing that, I'll put the other one back in and see if it occurs when both are in together. I almost wish it happened more often, so I could get this tracked down quicker lolDon't be surprised if both sticks are fine on their own but not together. It's possible for one stick to have drifted a tad in it's operation so that it works on its own but not with another stick (which hasn't drifted).
They have replaced the RAM now. Didn't seem to be the CPUs causing it (they did a stress test), and all the other components seemed ok. So hopefully this was the culprit, and it fixes itDon't be surprised if both sticks are fine on their own but not together. It's possible for one stick to have drifted a tad in it's operation so that it works on its own but not with another stick (which hasn't drifted).