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 until

 

 

1.

Reseat DIMMs.

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 seven

7

System board failure

Replace the system board.

times, once every second,

 

(ROM detected failure

 

 

followed by a two second

 

prior to video).

 

 

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 BIOS

times, once every second,

 

bad checksum.

 

image.

followed by a two second

 

 

2.

Replace the system board.

pause. Beeps stop after fifth

 

 

iteration but LEDs continue until problem is solved.

Red Power LED flashes nine

9

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

System powers on but is unable to boot.

1.Check that the voltage selector, located on the rear of the power supply (some models), is set to the appropriate voltage. Proper voltage setting depends on your region.

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 247