Error 0x80050056

Value: -2147155882 | 0x80050056 | 2147811414

What does it mean ?

MCA_WARNING_PCI_BUS_SERR_NO_INFO  
Machine Check Event reported is a corrected PCI bus SERR error reported to CPU %1. %2 additional error(s) are contained within the record.
Value: 86 | 0x0056 | 0b0000000001010110

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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