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The codes that you see are status codes. It is normal to see several codes during the POST.
If the system always freezes at a specific code, this code can be used for troubleshooting.
| Related Device | CPU | Memory | Graphic Card | Boot up / External device |
|---|---|---|---|---|
| 00, 19, 30, 40, 55 | V | V | V | |
| B0, 99, 15, 53 | V | V | ||
| F9 | V | |||
| D6 | V | V | ||
| A0, A2, B2 | V |
A9, AB → Boot into the BIOS
AA → Boot into the operating system
| 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 | PEl 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 |
| 2C | Memory initialization.Memory presence detection |
| 2D | Memory initialization.Programming memory timing information |
| 2E | Memory initialization.Configuring memory |
| 2F | Memory initialization (other) |
| 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 |
| 38-3A | Post-Memory System Agent initialization(System Agent module specific) |
| 3B | Post-Memory PCH initialization is started |
| 3C-3E | Post-Memory PCH initialization (PCH module specific) |
| 4F | DXE IPL is started |
| 5B | Reset PPI is not available |
| 5C-5F | Reserved for future AMI error codes |
| PEl 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 | Unspecified 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-5F | Reserved for future AMI error codes |
| DXE Progress Codes | |
| 60 | DXE Core is started |
| 61 | NVRAM initialization |
| 62 | Installation of the PCH Runtime Services |
| 63 | CPU DXE initialization is started |
| 64-67 | 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-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 |
| 73-77 | PCH DXE Initialization(PCH module specific) |
| 78 | ACPI module initialization |
| 79 | CSM initialization |
| 7A-7F | Reserved for future AMI DXE 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 10 Initialization |
| 9A | USB initialization is started |
| 9B | USB Reset |
| 9C | USB Detect |
| 9D | USB Enable |
| 9E-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 |
| AB | Setup Input Wait |
| 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 | Configuration Reset (reset of NVRAM settings) |
| B8-BF | Reserved for future AMI codes |
| 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-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-EF | Reserved for future AMI error codes |
| 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 firmware image is found |
| F4 | Recovery firmware image is loaded |
| F5-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-FF | Reserved for future AMI error codes |
