Heck of a week. Never a solid hour of "me time"! But I'm testing right now. Here's what I have so far.
I labelled all 4 memory sticks with a sharpie; because they all look identical. Labelled them 1, 2, 3 and 4.
I started with stick 1 in slot 1. Of course the video card was installed. Fired it up, it beeped, then the Gigabyte logo showed, and that was it. No POST screen.
Moved that stick to slot 2. No beep, no logo screen, no nothing. Just a tiny crackling sound from the speaker, after a few seconds. Moved it to slot 3 and 4. Same deal: no logo, no POST, crackling sound.
I did the same with sticks 2, 3 and 4, going through all 4 slots. The exact same thing happened, 12 times.
Since I found it hard to believe that all 4 sticks would be bad (I know, not impossible) I fired up the board without any memory installed. This time I was expecting some error beep code as explained in the back of the manual, but I didn't hear any.
Thinking it would sound some error codes without both memory and graphics card I removed that card as well. Again, nothing, not a single beep.
For the second round of tests I repeated all steps above, but this time briefly putting a jumper on the CMOS clear contacts (a few seconds, each time). The results were almost the same: this time I didn't even see the logo screen with stick 1 in slot 1.
All fans are running properly, and every time I powered to PSU down and back up (while swapping RAM) I briefly saw the NIC led flash.
I don't know... I've yet to swap the CPUs; that takes a while with that huge fan. I'd like to run it without the CPU, to see what it does then. Surely it should beep when that's removed!
Ugh. No fun.