!!
critical HP
Error Code Power light blinks rapidly
Critical battery level warning — battery reaches low charge or device fails to start.
? What Causes This
Battery dead/low power connections.
✓ How to Fix It
- Connect the AC adapter immediately.
- If no response, contact service.
Source: page 96 of the official manual
From the manual
This error code appears in:
HP Elitebook 840 G3 Notebook PC