I'm getting pretty pi#$ed off now, tried all slots with either stick and it's still a no go. No normal boot, no diagnostic, nothing...
One thing happened a couple of times though - several times, in slots other than the first, the board wouldn't beep at all but wouldn't boot as well, power was on, board was powered, fans would rotate but no display as well. But only sometimes this happened, next boot would go 3 beeps again.
I really don't know what else to do.
I guess next step is find that Fluke.
Any thoughts?!