Correctable memory error threshold exceeded SymptomPerformance is degraded. The memory LED is amber. ECC errors occur with no other symptoms. CauseThe DIMM is not installed or seated properly. The DIMM has failed. Action Update the system ROM to the latest version. Replace the DIMM. For more information, see the server maintenance and service guide. More information Updating firmware or system ROM Server maintenance and service guide DIMM handling guidelines