the server begins to boot, and then the performance led starts to turn on and turn off (red color), and in the server monitor you can watch "Parity Check 2 - System DIMM Memory", after that, the server does not respond at all.
Bad memory chip in Slot 2. You can pop the cover on the server and it will show a red light next to the DIMM that is bad. You can pull it out and the server will still boot, just run with less memory.
(at least I think it will boot without the chip in it)
RMA your DIMM through TAC. Get a case open tell them the error above and if you have 4 hour response, you should have a new memory chip shortly.