Error 0x8005004A

Value: -2147155894 | 0x8005004A | 2147811402

What does it mean ?

MCA_WARNING_MEM_1_2_5  
Machine Check Event reported is a corrected ECC memory error at physical address %3 on memory module %4 reported to CPU %1. %2 additional error(s) are contained within the record.
Value: 74 | 0x004A | 0b0000000001001010

Where does it come from ?

FACILITY_MCA_ERROR_CODE  
Machine Check Architectures (Intel Pentium Pro and Itanium processors)
Value: 5 | 0x005 | 0b00000101

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