Good news that the issue appears to have gone away with your new board!
My issue has not recurred over the past couple of weeks, despite many boot/shutdown/sleep cycles in that time (as well as long gaming sessions). I even did about 50 cycles one morning trying to force it to recur.
Theres...
Yes, hopefully splitchunks will let us know if the issue recurs with his new board.
That would mean the problem wasn’t the board, but he hasn’t posted in a week, so it seems likely it was the board.
He has a different PS than mine, so its not that.
If it happens again after this BIOS update then...
This! So I thought I was the only one! Same issue. It happens very infrequently to mine, once every twenty boots or so.
I was thinking BIOS issue or maybe the PS, but since I now see the same thing happening to someone elses build then I believe its the board. Maybe a faulty cap or VRM, or...