Yep, I know that CPUs are practically bulletproof. Was quite confident with it - however given the Kernel mode errors and Interrupt issues it was a case of either the motherboard not carrying the voltage properly or the PSU not delivering it properly.... ultimately hard to diagnose when there's no spare parts available other than purchasing it. Thinking also that the behaviours it exhibited seem consistent to it narrowing down to a PSU being now my culprit. Not that I'm too overly concerned that I have ended up purchasing an upgrade. I'm looking at an eVGA G3 PSU to do the replacement. Should be good enough.