"Doug":
went thru hell for 3 weeks with the cold boot prob, (P9X79 Deluxe) sent mobo back to ASUS (intervention by mod on vip forum), they kept it for 2 weeks, couldnt reproduce issue, sent it back.
He just figured it out.
A mind blower
http://hardforum.com/showpost.php?p=...&postcount=166
http://vip.asus.com/forum/view.aspx?...Language=en-us