Or you could just be overclocking to far...
I couldn't give it a rest, got up to 4.32GHz but beyond that an hour of 5GB LinX runs eventually always gives me one of these IRQ errors.
As you mention dump file analysis, perhaps it is worth a guide of its own? It's not as straightforward as installing a program and opening the dmp file, unless there is an easier way of doing it that I don't know about?