Can you run dual processors if you only use DIMM0 and DIMM2 (avoid DIMM pair that includes DIMM3)? Lionel > On Jan 11, 2018, at 2:18 PM, Mark Benson <md.benson at gmail.com> wrote: > > The answer is that the DIMM3 RAM socket (yes, one of the ones that had the RAM in!!) is burned out at one end.