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Appendix C: POST Code Diagnostic LED Decoder
Diagnostic LED Decoder
Checkpoint
Upper Nibble
MSB
8h
4h
2h
LED
#7
#6
#5
0xE6h
O
O
O
DXE Drivers
0xE7h
O
O
O
0xE8h
O
O
O
0xE9h
O
O
O
0xEAh
O
O
O
0xEEh
O
O
O
0xEFh
O
O
O
Pre-EFI Initialization Module (PEIM)/Recovery
0x30h
X
X
O
0x31h
X
X
O
0x34h
X
X
O
0x35h
X
X
O
0x3Fh
X
X
O
Runtime Phase/EFI Operating System Boot
0XF2h
O
O
O
0XF4h
O
O
O
0XF5h
O
O
O
0XF8h
O
O
O
Progress Code
0XF9h
O
X
X
0xFAh
O
X
X
122
O = On, X=Off
Lower Nibble
LSB
1h
8h
4h
2h
1h
#4
#3
#2
#1
#0
X
X
O
O
X
X
O
O
X
O
X
O
X
X
X
X
O
X
X
O
X
O
O
X
X
X
O
O
X
X
X
O
O
X
O
O
X
X
X
X
O
X
X
X
O
O
X
O
X
X
O
X
O
X
O
O
O
O
O
O
O
X
X
O
X
O
X
O
X
X
O
X
O
X
O
O
O
X
X
X
O
X
X
X
X
O
X
X
X
O
Intel order number E65697-010
Intel® Server Board S3420GP TPS
Started connecting drivers
Waiting for user input
Checking password
Entering BIOS setup
Flash Update
Calling Int 19. One beep unless silent boot is enabled.
Unrecoverable boot failure
Crisis recovery has been initiated because of a user request
Crisis recovery has been initiated by software (corrupt flash)
Loading crisis recovery capsule
Handing off control to the crisis recovery capsule
Crisis recovery capsule failed integrity check of capsule descriptors
Signal that the OS has switched to virtual memory mode
Entering the sleep state
Exiting the sleep state
Operating system has requested EFI to close boot services has been
cancelled.
Resetting the keyboard
Disabling the keyboard
Description
Revision 2.4
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