Yes I get the same fault with nothing in the slots. I guess this fault would be much easier to resolve if I had a working logic board which I could swap parts. I'm going to replace the RAM first I think and if still a problem then will move onto CPU & ROMS. Any idea where I can source replacement ROMS for this?

Have also just noticed 3 darkened legs on CD ROM M5l2764k, not sure if there has been some overheating here? Could this possibly be the cause?