Gigabyte GA-Z77X-UD3H User Manual - Page 113

Debug LED Codes

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5-4 Debug LED Codes Regular Boot Code 10 11 12~14 15 16~18 19 1A~2A 2B~2F 31 32~36 37~3A 3B~3E 3F~4F 60 61 62 63~67 68 69 6A 6B~6F 70 71 72 73~77 78 79 7A~7F 80~8F 90 91 Description PEI Core is started. Pre-memory CPU initialization is started. Reserved. Pre-memory North-Bridge initialization is started. Reserved. Pre-memory South-Bridge initialization is started. Reserved. Memory initialization. Memory installed. CPU PEI initialization. IOH PEI initialization. PCH PEI initialization. Reserved. DXE Core is started. NVRAM initialization. Installation of the PCH runtime services. CPU DXE initialization is started. PCI host bridge initialization is started. IOH DXE initialization. IOH SMM initialization. Reserved. PCH DXE initialization. PCH SMM initialization. PCH devices initialization. PCH DXE initialization (PCH module specific). ACPI Core initialization. CSM initialization is started. Reserved for AMI use. Reserved for OEM use (OEM DXE initialization codes). Phase transfer to BDS (Boot Device Selection) from DXE. Issue event to connect drivers. - 113 - Appendix

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- 113 -
Appendix
5-4
Debug LED Codes
Code
Description
10
PEI Core is started.
11
Pre-memory CPU initialization is started.
12~14
Reserved.
15
Pre-memory North-Bridge initialization is started.
16~18
Reserved.
19
Pre-memory South-Bridge initialization is started.
1A~2A
Reserved.
2B~2F
Memory initialization.
31
Memory installed.
32~36
CPU PEI initialization.
37~3A
IOH PEI initialization.
3B~3E
PCH PEI initialization.
3F~4F
Reserved.
60
DXE Core is started.
61
NVRAM initialization.
62
Installation of the PCH runtime services.
63~67
CPU DXE initialization is started.
68
PCI host bridge initialization is started.
69
IOH DXE initialization.
6A
IOH SMM initialization.
6B~6F
Reserved.
70
PCH DXE initialization.
71
PCH SMM initialization.
72
PCH devices initialization.
73~77
PCH DXE initialization (PCH module specific).
78
ACPI Core initialization.
79
CSM initialization is started.
7A~7F
Reserved for AMI use.
80~8F
Reserved for OEM use (OEM DXE initialization codes).
90
Phase transfer to BDS (Boot Device Selection) from DXE.
91
Issue event to connect drivers.
Regular Boot