Originally posted by: Metaluna
The original PSU was a Seasonic Super Silencer 400W, which is rated at 22A@12V, 30A@5V, and 28A@3.3V. I replaced it with a Seasonic S12 600W which is rated at 18A@12V1, 18A@12V2 (not used), 30A@5V, and 30A@3.3V.
One thing did occur to me that my HSF is a Scythe Ninja, which is one of those vertical heatpipe coolers that doesn't direct much air down at the motherboard. I could try rigging up a fan to blow down across the motherboard and see if that helps. As I mentioned though, sometimes the problem occurs on a cold start after the system has been shut down for hours. I wonder if it could be some kind of power sequencing problem where the motherboard is switching the hard drives on and off (like it does with the fans) and confusing them.