BIOS ROM

8.3.4 Boot Error Codes

The BIOS provides visual and audible indications of a failed system boot by using the system’s power LED and the system board speaker. The error conditions are listed in the following table.

Table 8-1

Boot Error Codes

Visual (power LED)

Audible (speaker)

Meaning

 

 

 

Blinks red 2 times @ 1 Hz

None

Processor thermal shut down. Check air flow,

 

 

fan operation, and CPU heat sink.

 

 

 

Blinks red 3 times @ 1 Hz

None

Processor not installed. Install or reseat CPU.

 

 

 

Blinks red 4 times @ 1 Hz

None

Power failure (power supply is overloaded).

 

 

Check stroage devices, expansion cards

 

 

and/or system board (CPU power connector

 

 

P3).

 

 

 

Blinks red 5 times @ 1 Hz

5 beeps

Pre-video memory error. Incompatible or

 

 

incorrectly seated DIMM.

 

 

 

Blinks red 6 times @ 1 Hz

6 beeps

Pre-video graphics error. On system with

 

 

integrated graphics, check/replace system

 

 

board. On system with graphics card,

 

 

check/replace graphics card.

 

 

 

Blinks red 7 times @ 1 Hz

7 beeps

PCA failure. Check/replace system board.

 

 

 

Blinks red 8 times @ 1 Hz

8 beeps

Invalid ROM (checksum error). Reflash ROM

 

 

using CD or replace system board.

 

 

 

Blinks red 9 times @ 1 Hz

9 beeps

System powers on but fails to boot. Check

 

 

power supply, CPU, system board.

 

 

 

Blinks red 10 times @ 1 Hz

None

Bad option card.

 

 

 

 

Technical Reference Guide

www.hp.com

8-5