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5 Troubleshooting
146
0xDB A R G A Trying boot device selection
0xDC A A OFF R Trying boot device selection
0xDE A A G R Trying boot device selection
0xDF A A G A Trying boot device selection
Pre-EFI Initialization (PEI) Core
0xE0h R R R OFF Started dispatching early
initialization modules (PEIM)
0xE2h R R A OFF Initial memory found, configured,
and installed correctly
0xE1h R R R G Reserved for initialization module
use (PEIM)
0xE3h R R A G Reserved for initialization module
use (PEIM)
Driver Execution Environment (DXE) Core
0xE4h R A R OFF Entered EFI driver execution phase
(DXE)
0xE5h R A R G Started dispatching drivers
0xE6h R A A OFF Started connecting drivers
DXE Drivers
0xE7h R A A G Waiting for user input
0xE8h A R R OFF Checking password
0xE9h A R R G Entering BIOS setup
0xEAh A R A OFF Flash update
0xEEh A A A OFF Calling Int 19. One beep unless
silent boot is enabled.
0xEFh A A A G Unrecoverable boot failure / S3
resume failure
Runtime Phase/EFI Operating System Boot
0xF4h R A R R Entering Sleep state
0xF5h R A R A Exiting Sleep state
Checkpoint
code
Diagnostic LED Decoder
Description
G=Green, R=Red, A=Amber
MSB LSB