Dell_3, The issue normally occurs when the system has an uncertified PCI-Express add-ons card installed, as well as the iDrac being out of date. It is just a false alarm with no functional impact to the system, so you can clear the SEL and it will back to normal till next iDRAC reset or AC power cycle. I would suggest getting the system to current on BIOS and iDrac and the error shouldn't occur anymore. 
Recently, I fount the front LED is showing FAN0001 Fan 6 RPM is outside of range. But I do not have FAN 6 installed. Any hints?  Thanks a lot. [IMAGE][IMAGE]
DELL R530 is alerting the 'ghost' fan