Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

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.

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

System powers on but is

1.

Unplug the AC power cord from the

times, once every second,

 

unable to boot.

 

computer, wait 30 seconds, then plug the

followed by a two second

 

 

 

power cord back in to the computer.

pause. Beeps stop after fifth

 

 

2.

Replace the system board.

iteration but LEDs continue

 

 

until problem is solved.

 

 

3.

Replace the processor.

 

 

 

 

 

 

 

 

Red Power LED flashes ten

10

Bad option card.

1.

Check each option card by removing the

times, once every second,

 

 

 

card (one at a time if multiple cards), then

followed by a two second

 

 

 

power on the system to see if fault goes

pause. Beeps stop after fifth

 

 

 

away.

iteration but LEDs continue

 

 

2.

Once a bad card is identified, remove and

until problem is solved.

 

 

 

 

 

 

replace the bad option card.

 

 

 

3.

Replace the system board.

 

 

 

 

 

Red Power LED flashes

11

The current processor

1.

Install a TXT capable processor.

eleven times, once every

 

does not support a

2.

Disable TXT in the Computer Setup (F10)

second, followed by a two

 

feature previously

second pause. Beeps stop

 

enabled on this system.

 

utility.

after fifth iteration but LEDs

 

 

3.

Reinstall the original processor.

continue until problem is

 

 

solved.

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 135

Page 142
Image 142
HP 1105 manual Activity Beeps Possible Cause Recommended Action