MSI MEG Z790 ACE Manuel D'utilisation page 63

3C - 3E Post-Memory PCH initialization (PCH module specific)
4F DXE IPL is started
PEI Error Codes
50 Memory initialization error. Invalid memory type or incompatible
memory speed
51 Memory initialization error. SPD reading has failed
52 Memory initialization error. Invalid memory size or memory modules do
not match
53 Memory initialization error. No usable memory detected
54 Unspecified memory initialization error
55 Memory not installed
56 Invalid CPU type or Speed
57 CPU mismatch
58 CPU self test failed or possible CPU cache error
59 CPU micro-code is not found or micro-code update is failed
5A Internal CPU error
5B Reset PPI is not available
5C - 5F Reserved for future AMI error codes
DXE Progress Codes
60 DXE Core is started
61 NVRAM initialization
62 Installation of the PCH Runtime Services
63 CPU DXE initialization is started
64 - 67 CPU DXE initialization (CPU module specific)
68 PCI host bridge initialization
69 System Agent DXE initialization is started
6A System Agent DXE SMM initialization is started
61