HP Keyboard blinking LEDs or beep tones

Meaning of Sample Blink Codes for some EFI Notebooks

Number of Blinks or Beeps

Location of Blinking LEDs

Component Being Checked

Error Condition

Continuous glow

Battery power LED

Battery

The AC adapter is attached and the battery is charging, but does not yet have sufficient charge to power the notebook.

1

Caps Lock/Num Lock

CPU

CPU not functional

2

Caps Lock/Num Lock

BIOS

BIOS corruption failure

3

Caps Lock/Num Lock

Memory

Module error not functional

4

Caps Lock/Num Lock

Graphics

Graphics controller not functional

5

Caps Lock/Num Lock

System board

General system board failure

6

Caps Lock/Num Lock

BIOS

BIOS authentication failure

Continuous blink

AC power adapter LED

Power adapter

Insufficient power