Asus Maximus Mainboard Debug LED Codes

Asus Maximus Mainboard Debug LED Codes

00 – Not used
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
05 – OEM 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
0A – OEM initialization after microcode loading
0B – Cache initialization

SEC Error Codes

0C – Reserved for future AMI SEC error codes
0D – Reserved for future AMI SEC error codes
0E – Microcode not found
0F – Microcode not loaded

PEI Phase

10 – PEI Core is started
11 – Pre-memory CPU initialization is started
12 – Pre-memory CPU initialization (CPU module specific)
13 – Pre-memory CPU initialization (CPU module specific)
14 – Pre-memory CPU initialization (CPU module specific)
15 – Pre-memory System Agent initialization is started
16 – Pre-Memory System Agent initialization (System Agent module specific)
17 – Pre-Memory System Agent initialization (System Agent module specific)
18 – Pre-Memory System Agent initialization (System Agent module specific)
19 – Pre-memory PCH initialization is started
1A – Pre-memory PCH initialization (PCH module specific)
1B – Pre-memory PCH initialization (PCH module specific)
1C – Pre-memory PCH initialization (PCH module specific)
1D – OEM pre-memory initialization codes
1E – OEM pre-memory initialization codes
1F – OEM pre-memory initialization codes

20 – OEM pre-memory initialization codes
21 – OEM pre-memory initialization codes
22 – OEM pre-memory initialization codes
23 – OEM pre-memory initialization codes
24 – OEM pre-memory initialization codes
25 – OEM pre-memory initialization codes
26 – OEM pre-memory initialization codes
27 – OEM pre-memory initialization codes
28 – OEM pre-memory initialization codes
29 – OEM pre-memory initialization codes
2A – OEM pre-memory initialization codes
2B – Memory initialization. Serial Presence Detect (SPD) data reading
2C – Memory initialization. Memory presence detection
2D – Memory initialization. Programming memory timing information
2E – Memory initialization. Confi guring memory
2F – Memory initialization (other)

30 – Reserved for ASL (see ASL Status Codes section below)
31 – Memory Installed
32 – CPU post-memory initialization is started
33 – CPU post-memory initialization. Cache initialization
34 – CPU post-memory initialization. Application Processor(s) (AP) initialization
35 – CPU post-memory initialization. Boot Strap Processor (BSP) selection
36 – CPU post-memory initialization. System Management Mode (SMM) initialization
37 – Post-Memory System Agent initialization is started
38 – Post-Memory System Agent initialization (System Agent module specific)
39 – Post-Memory System Agent initialization (System Agent module specific)
3A – Post-Memory System Agent initialization (System Agent module specific)
3B – Post-Memory PCH initialization is started
3C – Post-Memory PCH initialization (PCH module specific)
3D – Post-Memory PCH initialization (PCH module specific)
3E – Post-Memory PCH initialization (PCH module specific)
3F – OEM post memory initialization codes

40 – OEM post memory initialization codes
41 – OEM post memory initialization codes
42 – OEM post memory initialization codes
43 – OEM post memory initialization codes
44 – OEM post memory initialization codes
45 – OEM post memory initialization codes
46 – OEM post memory initialization codes
47 – OEM post memory initialization codes
48 – OEM post memory initialization codes
49 – OEM post memory initialization codes
4A – OEM post memory initialization codes
4B – OEM post memory initialization codes
4C – OEM post memory initialization codes
4D – OEM post memory initialization codes
4E – OEM post memory initialization codes
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 – Unspecifi ed 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 – Reserved for future AMI error codes
5D – Reserved for future AMI error codes
5E – Reserved for future AMI error codes
5F – Reserved for future AMI error codes

DXE Phase

60 – DXE Core is started
61 – NVRAM initialization
62 – Installation of the PCH Runtime Services
63 – CPU DXE initialization is started
64 – CPU DXE initialization (CPU module specific)
65 – CPU DXE initialization (CPU module specific)
66 – CPU DXE initialization (CPU module specific)
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
6B – System Agent DXE initialization (System Agent module specific)
6C – System Agent DXE initialization (System Agent module specific)
6D – System Agent DXE initialization (System Agent module specific)
6E – System Agent DXE initialization (System Agent module specific)
6F – System Agent DXE initialization (System Agent module specific)

70 – PCH DXE initialization is started
71 – PCH DXE SMM initialization is started
72 – PCH devices initialization
73 – PCH DXE Initialization (PCH module specific)
74 – PCH DXE Initialization (PCH module specific)
75 – PCH DXE Initialization (PCH module specific)
76 – PCH DXE Initialization (PCH module specific)
77 – PCH DXE Initialization (PCH module specific)
78 – ACPI module initialization
79 – CSM initialization
7A – Reserved for future AMI DXE codes
7B – Reserved for future AMI DXE codes
7C – Reserved for future AMI DXE codes
7D – Reserved for future AMI DXE codes
7E – Reserved for future AMI DXE codes
7F – Reserved for future AMI DXE codes

80 – OEM DXE initialization codes
81 – OEM DXE initialization codes
82 – OEM DXE initialization codes
83 – OEM DXE initialization codes
84 – OEM DXE initialization codes
85 – OEM DXE initialization codes
86 – OEM DXE initialization codes
87 – OEM DXE initialization codes
88 – OEM DXE initialization codes
89 – OEM DXE initialization codes
8A – OEM DXE initialization codes
8B – OEM DXE initialization codes
8C – OEM DXE initialization codes
8D – OEM DXE initialization codes
8E – OEM DXE initialization codes
8F – OEM DXE initialization codes

90 – Boot Device Selection (BDS) phase is started
91 – Driver connecting is started
92 – PCI Bus initialization is started
93 – PCI Bus Hot Plug Controller Initialization
94 – PCI Bus Enumeration 32
95 – PCI Bus Request Resources
96 – PCI Bus Assign Resources
97 – Console Output devices connect
98 – Console input devices connect
99 – Super IO Initialization
9A – USB initialization is started
9B – USB Reset
9C – USB Detect
9D – USB Enable
9E – Reserved for future AMI codes
9F – Reserved for future AMI codes

A0 – IDE initialization is started
A1 – IDE Reset
A2 – IDE Detect
A3 – IDE Enable
A4 – SCSI initialization is started
A5 – SCSI Reset
A6 – SCSI Detect
A7 – SCSI Enable
A8 – Setup Verifying Password
A9 – Start of Setup
AA – Reserved for ASL (see ASL Status Codes section below)
AB – Setup Input Wait
AC – Reserved for ASL (see ASL Status Codes section below)
AD – Ready To Boot event
AE – Legacy Boot event
AF – Exit Boot Services event

B0 – Runtime Set Virtual Address MAP Begin
B1 – Runtime Set Virtual Address MAP End
B2 – Legacy Option ROM Initialization
B3 – System Reset
B4 – USB hot plug
B5 – PCI bus hot plug
B6 – Clean-up of NVRAM
B7 – Confi guration Reset (reset of NVRAM settings)
B8 – Reserved for future AMI codes
B9 – Reserved for future AMI codes
BA – Reserved for future AMI codes
BB – Reserved for future AMI codes
BC – Reserved for future AMI codes
BD – Reserved for future AMI codes
BE – Reserved for future AMI codes
BF – Reserved for future AMI codes

C0 – OEM BDS initialization codes
C1 – OEM BDS initialization codes
C2 – OEM BDS initialization codes
C3 – OEM BDS initialization codes
C4 – OEM BDS initialization codes
C5 – OEM BDS initialization codes
C6 – OEM BDS initialization codes
C7 – OEM BDS initialization codes
C8 – OEM BDS initialization codes
C9 – OEM BDS initialization codes
CA – OEM BDS initialization codes
CB – OEM BDS initialization codes
CC – OEM BDS initialization codes
CD – OEM BDS initialization codes
CE – OEM BDS initialization codes
CF – OEM BDS initialization codes

DXE Error Codes

D0 – CPU initialization error
D1 – System Agent initialization error
D2 – PCH initialization error
D3 – Some of the Architectural Protocols are not available
D4 – PCI resource allocation error. Out of Resources
D5 – No Space for Legacy Option ROM
D6 – No Console Output Devices are found
D7 – No Console Input Devices are found
D8 – Invalid password
D9 – Error loading Boot Option (LoadImage returned error)
DA – Boot Option is failed (StartImage returned error)
DB – Flash update is failed
DC – Reset protocol is not available

S3 Resume Progress Codes

E0 – S3 Resume is stared (S3 Resume PPI is called by the DXE IPL)
E1 – S3 Boot Script execution
E2 – Video repost
E3 – OS S3 wake vector call
E4 – Reserved for future AMI progress codes
E5 – Reserved for future AMI progress codes
E6 – Reserved for future AMI progress codes
E7 – Reserved for future AMI progress codes

S3 Resume Error Codes

E8 – S3 Resume Failed
E9 – S3 Resume PPI not Found
EA – S3 Resume Boot Script Error
EB – S3 OS Wake Error
EC – Reserved for future AMI error codes 31
ED – Reserved for future AMI error codes 31
EE – Reserved for future AMI error codes 31
EF – Reserved for future AMI error codes 31

Recovery Progress Codes

F0 – Recovery condition triggered by firmware (Auto recovery)
F1 – Recovery condition triggered by user (Forced recovery)
F2 – Recovery process started
F3 – Recovery fi rmware image is found
F4 – Recovery fi rmware image is loaded
F5 – Reserved for future AMI progress codes
F6 – Reserved for future AMI progress codes
F7 – Reserved for future AMI progress codes

Recovery Error Codes

F8 – Recovery PPI is not available
F9 – Recovery capsule is not found
FA – Invalid recovery capsule
FB – Reserved for future AMI error codes
FC – Reserved for future AMI error codes
FD – Reserved for future AMI error codes
FE – Reserved for future AMI error codes
FF – Reserved for future AMI error codes

ACPI/ASL Checkpoints

01 – System is entering S1 sleep state
02 – System is entering S2 sleep state
03 – System is entering S3 sleep state
04 – System is entering S4 sleep state
05 – System is entering S5 sleep state
10 – System is waking up from the S1 sleep state
20 – System is waking up from the S2 sleep state
30 – System is waking up from the S3 sleep state
40 – System is waking up from the S4 sleep state
AC – System has transitioned into ACPI mode. Interrupt controller is in APIC mode
AA – System has transitioned into ACPI mode. Interrupt controller is in APIC mode