You've got a bunch of these:
Power Unit /Pwr Unit Status (#0x01) CRITICAL event: Pwr Unit Status reports the power unit has suffered a failure.
and a few of these:
Fan /Processor 2 FAN (#0x30) CRITICAL event: Processor 2 FAN reports the sensor is in a low, critical, and going lower state. Sensor reading: 0 RPM.
I'd replace the power supply first, and see if that fixes the fan issue as well.