Hi,
I have an HP Proliant DL380 G7 that has dual 460 watt power supplies. If I have both power supplies plugged in at the same time, then the server will boot and get through the POST just fine. If only one of the power supplies is connected (doesn't matter which), the system starts and seems to be working, but when the POST reaches the "power and thermal calibration" stage, the server suddenly powers off without warning. The power button turns amber and the system health light flashes read. The health indicator light for the connected power supply also turns on (the light for the disconnected power supply was always on). No other lights are on (for example, the power cap light remains off).
I have updated the BIOS and reset everything to defaults, but this issue persists. Does anybody have any ideas where to look? This system is out of warranty and I don't want to purchase a support contract since everything else is working just fine. Thanks.
EDIT: It doesn't make a difference if I try it with one of the power supplies removed; the result is the same.