Thanks for all the responses. Well, stupidly, I tried (actually I succeeded) in putting a stick of DDR ram in an SDRAM slot. The system still worked after I took it out though. This morning I disconnected all the drives, took the ram out and cleaned the slots and replaced it and gave it an overall cleaning with air. There is some play in the motherboard, I pushed away from the case- not sure what else to do about that. Tried starting it to see if there was any difference. It ran longer this time, maybe 10 seconds, then there was a blue flash in the vicinity of the power supply and it cut off. Oh well, I think this one is beyond me.
Thanks, SW
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