Hey every one I recently bought a 2009 mac pro upgrades the firmware to 5,1 before switch to the new firmware this was still happening but all the fans are spinning constantly I checked that the connector on the heat sink in the CPU tray is engaged fully it is I did smc reset where u just unplug it idk what else it could be the machine is ducts free as I cleaned it when I recieved it any help would be great it runs great other wi and e just annoying cause it's loud