MSI MPG Z790 CARBON MAX WIFI User Manual 1 - Page 52

Debug Code LED, Boot Phases, SEC Progress Codes, SEC Error Codes

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Debug Code LED The Debug Code LED displays progress and error codes during and after POST. Refer to the Debug Code LED table for details. Hexadecimal Character Table Hexadecimal 01234567 LED display Hexadecimal 8 9ABCDEF LED display Boot Phases Security (SEC) - initial low-level initialization Pre-EFI Initialization (PEI) - memory initialization Driver Execution Environment (DXE) - main hardware initialization Boot Device Selection (BDS) - system setup, pre-OS user interface & selecting a bootable device (CD/DVD, HDD, USB, Network, Shell, ...) Debug Code LED Table SEC Progress Codes 01 Power on. Reset type detection (soft/hard) 02 AP initialization before microcode loading 03 System Agent initialization before microcode loading 04 PCH initialization before microcode loading 06 Microcode loading 07 AP initialization after microcode loading 08 System Agent initialization after microcode loading 09 PCH initialization after microcode loading 0B Cache initialization SEC Error Codes 0C - 0D Reserved for future AMI SEC error codes 0E Microcode not found 0F Microcode not loaded 52

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Debug Code LED
The Debug Code LED displays progress and error codes during and after POST. Refer
to the Debug Code LED table for details.
Boot Phases
Security (SEC)
– initial low-level initialization
Pre-EFI Initialization (PEI)
– memory initialization
Driver Execution Environment (DXE)
– main hardware initialization
Boot Device Selection (BDS)
– system setup, pre-OS user interface & selecting a
bootable device (CD/DVD, HDD, USB, Network, Shell, …)
Debug Code LED Table
SEC Progress Codes
01
Power on. Reset type detection (soft/hard)
02
AP initialization before microcode loading
03
System Agent initialization before microcode loading
04
PCH initialization before microcode loading
06
Microcode loading
07
AP initialization after microcode loading
08
System Agent initialization after microcode loading
09
PCH initialization after microcode loading
0B
Cache initialization
SEC Error Codes
0C - 0D
Reserved for future AMI SEC error codes
0E
Microcode not found
0F
Microcode not loaded
Hexadecimal Character Table
Hexadecimal
0
1
2
3
4
5
6
7
LED display
Hexadecimal
8
9
A
B
C
D
E
F
LED display