This morning the Origin2K decided to shut down with POK FAIL on the MSC, I noticed the fan hi-speed indicator led was lit along with all the red fault lights on both routers. Turned the MSC key to standby and flipped the breaker in the back off , waited a while, then back on. Turned the key on to power the system up and it immediately went to high fans. After a few seconds the system shut down, both the fan hi-speed and ambient over-temp led's are lit but no message on the MSC and no fault lights on the routers. I know the O2K Deskside Owners Guide says POK FAIL is a power OK failure that occurred on an unidentified board. So what does that mean? It also stated that an MSC shutdown can be caused by failure of system fans, critical fans, or unacceptably high ambient temperature. The temperature in the computer room usually ranges from 66° to 69° and I checked the fan tray, all are working. Where are the other "critical" fans located and could it be another problem causing this? The system doesn't stay up long enough to get console messages.