Table E-2Diagnostic Front Panel LEDs and Audible Codes (continued)

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

Red Power LED flashes five

5

Pre-video memory error.

CAUTION: To avoid damage to the DIMMs or

times, once every second,

 

 

the system board, you must unplug the computer

followed by a two second

 

 

power cord before attempting to reseat, install, or

pause. Beeps stop after fifth

 

 

remove a DIMM module.

iteration but LEDs continue

 

 

1.

Reseat DIMMs.

until problem is solved.

 

 

 

 

 

2.

Replace DIMMs one at a time to isolate the

 

 

 

 

faulty module.

 

 

 

3.

Replace third-party memory with HP

 

 

 

 

memory.

 

 

 

4.

Replace the system board.

 

 

 

 

Red Power LED flashes six

6

Pre-video graphics error.

For systems with a graphics card:

times, once every second,

 

 

1.

Reseat the graphics card.

followed by a two second

 

 

pause. Beeps stop after fifth

 

 

2.

Replace the graphics card.

iteration but LEDs continue

 

 

until problem is solved.

 

 

3.

Replace the system board.

 

 

 

 

 

 

For systems with integrated graphics, replace

 

 

 

the system board.

 

 

 

 

Red Power LED flashes

7

System board failure

Replace the system board.

seven times, once every

 

(ROM detected failure

 

 

second, followed by a two

 

prior to video).

 

 

second pause. Beeps stop

 

 

 

 

after fifth iteration but LEDs

 

 

 

 

continue until problem is

 

 

 

 

solved.

 

 

 

 

 

 

 

 

 

Red Power LED flashes eight

8

Invalid ROM based on

1.

Reflash the system ROM with the latest

times, once every second,

 

bad checksum.

 

BIOS image. See the “Boot Block

followed by a two second

 

 

 

Emergency Recovery Mode” section of the

pause. Beeps stop after fifth

 

 

 

Desktop Management Guide for more

iteration but LEDs continue

 

 

 

information.

until problem is solved.

 

 

2.

Replace the system board.

 

 

 

 

 

 

 

 

Red Power LED flashes nine

9

System powers on but is

1.

Check that the voltage selector, located on

times, once every second,

 

unable to boot.

 

the rear of the power supply (some

followed by a two second

 

 

 

models), is set to the appropriate voltage.

pause. Beeps stop after fifth

 

 

 

Proper voltage setting depends on your

iteration but LEDs continue

 

 

 

region.

until problem is solved.

 

 

2.

Unplug the AC power cord from the

 

 

 

 

 

 

 

computer, wait 30 seconds, then plug the

 

 

 

 

power cord back in to the computer.

 

 

 

3.

Replace the system board.

 

 

 

4.

Replace the processor.

 

 

 

 

 

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 209