⚠
warning HP
Error Code White and Amber blinking
The embedded controller is recovering the boot block or DXE firmware recovery.
? What Causes This
Extended boot time due to loading images from an external source.
✓ How to Fix It
Wait for DXE recovery to complete.
Source: page 84 of the official manual
From the manual
This error code appears in:
HP Elitebook 840 G5 Notebook PC