MSI X299 SLI PLUS User Manual - Page 49

Debug Code LED, Hexadecimal Character Table, Boot Phases, Debug Code LED Table

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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. Debug Code LED Hexadecimal Character Table Hexadecimal 0 1 2 3 4 5 6 7 8 9 A B C D E F Debug Code LED display 0123456789ABCDEF 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 Power on. Reset type detection (soft/ 01 hard) 02 AP initialization before microcode loading System Agent initialization before 03 microcode loading PCH initialization before microcode 04 loading 06 Microcode loading 07 AP initialization after microcode loading System Agent initialization after 08 microcode loading 09 PCH initialization after microcode loading 0B Cache initialization SEC Error Codes 0C - 0D 0E 0F Reserved for future AMI SEC error codes Microcode not found Microcode not loaded PEI Progress Codes 10 11 12 - 14 15 16 - 18 19 1A - 1C 2B PEI Core is started Pre-memory CPU initialization is started Pre-memory CPU initialization (CPU module specific) Pre-memory System Agent initialization is started Pre-Memory System Agent initialization (System Agent module specific) Pre-memory PCH initialization is started Pre-memory PCH initialization (PCH module specific) Memory initialization. Serial Presence Detect (SPD) data reading Onboard LEDs 49

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49
Onboard LEDs
Debug Code LED
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
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Debug Code
LED display
0123456789ABCDEF
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
PEI Progress Codes
10
PEI Core is started
11
Pre-memory CPU initialization is started
12 - 14
Pre-memory CPU initialization (CPU
module specific)
15
Pre-memory System Agent initialization
is started
16 - 18
Pre-Memory System Agent initialization
(System Agent module specific)
19
Pre-memory PCH initialization is started
1A - 1C
Pre-memory PCH initialization (PCH
module specific)
2B
Memory initialization. Serial Presence
Detect (SPD) data reading