struct WHEA_ERROR_RECORD_HEADER

typedef struct _WHEA_ERROR_RECORD_HEADER
{
     ULONG Signature;
     WORD Revision;
     WORD Reserved1;
     WORD Reserved2;
     WORD SectionCount;
     WHEA_ERROR_SEVERITY Severity;
     ULONG ValidationBits;
     ULONG Length;
     LARGE_INTEGER Timestamp;
     GUID PlatformId;
     GUID PartitionId;
     GUID CreatorId;
     GUID NotifyType;
     UINT64 RecordId;
     ULONG Flags;
     WHEA_PERSISTENCE_INFO PersistenceInfo;
     UCHAR Reserved3[12];
} WHEA_ERROR_RECORD_HEADER, *PWHEA_ERROR_RECORD_HEADER;

Windows Vista Kernel Structures