Frequently Asked Questions
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Q: How do I read the POST Diagnostic LEDs on the Gateway 9715 Server?

A: The BIOS provides the current stage of the POST progress via a block of eight LEDs. The LEDs are listed in the first table. Codes and descriptions are in the second table.

POST Progress LED Location and Example

LED Reference Designator Bit Example: Initialize Memory
DS7D2 7 (MSB)   0x27
DS7D3 6  
DS7D4 5 On
DS7D5 4  
DS7D6 3  
DS7E1 2 On
DS7E2 1 On
DS7E3 0 (LSB) On

POST Progress LED Codes

Code Description
Host Processor:
0x10 Power-on initialization of the host processor (Boot Strap Processor)
0x11 Host processor cache initialization, including Application Processor (AP)
0x12 Starting AP initialization
0x13 SMM initialization
Chipset:
0x21 Initializing a chipset component
Memory:
0x22 REading configuration data from memory (SPD on DIMM)
0x23 Detecting presence of memory
0x24 Programming timing parameters in the memory controller
0x25 Configuring memory parameters in the memory controller
0x26 Optimizing memory controller settings
0x27 initializing memory, such as ECC init.
0x28 Testing memory
PCI Bus:
0x50 Enumerating PCI buses
0x51 Allocating resources to PCI buses
0x52 PCI Hot Plug controller initialization
0x53-
0x57		 Reserved for PCI bus
USB:
0x58 Resetting USB bus
0x59 Reserved for USB devices
SATA:
0x5A Resetting SATA bus and all devices
0x5B Reserved for ATA
SMBUS:
0x5C Resetting SMBUS
0x5D Reserved for SMBUS
Local Console:
0x70 Resetting the video controller (VGA)
0x71 Disabling the video controller (VGA)
0x72 Enabling the video controller (VGA)
Remote Console:
0x78 Resetting the console controller
0x79 Disabling the console controller
0x7A Enabling the console controller
Keyboard:
0x90 Resetting the keyboard
0x91 Disabling the keyboard
0x92 detecting the presence of the keyboard
0x93 Enabling the keyboard
0x94 Clearing keyboard input buffer
0x95 Instructing keyboard controller to run Self Test
Mouse:
0x98 Resetting the mouse
0x99 Detecting the mouse
0x9A Detecting the presence of mouse
0x9B Enabling the mouse
Fixed Media:
0xB0 Resetting fixed media device
0xB1 Disabling fixed media device
0xB2 Detecting the presence of a fixed media device
0xB3 Enabling/configuring a fixed media device
Removable Media:
0xB8 Resetting removable media device
0xB9 Disabling removable media device
0xBA Detecting the presence of a removable media device
0xBC Enabling/configuring a removable media device
BDS:
0xDy Trying boot selection y (where y = 0 to F)
PEI Core:
0xE0 Started dispatching early initialization modules (PEIM)
0xE2 Initial memory found, configured, and installed correctly
0xE,
0xE3		 Reserved for initialization module use (PEIM)
DXE Core:
0xE4 Entered EFI driver execution phase (DXE)
0xE5 Started dispatching drivers
0xE6 Started connecting drivers
DXE Drivers:
0xE7 Waiting for user input
0xE8 Checking password
0xE9 Entering the BIOS setup
0xEA Flash update
0xEE Calling Int 19. One beep unless silent boot is enabled.
0xEF Unrecoverable Boot failure/S3 resume failure
Runtime Phase/EFI OS Boot:
0xF4 Entering Sleep state
0xF5 Exiting Sleep state
0xF8 OS has requested EFI to close boot services
0xF9 OS has switched to virtual address mode
0xFA OS has requested the system to reset
PEIM/Recovery:
0x30 Crisis recovery has been initialized because of a user request
0x31 Crisis recovery has been initialized by software (corrupt flash)
0x34 Loading crisis recovery capsule
0x35 Handing off control to the crisis recovery capsule
0x3F Unable to complete crisis recovery