Table 8-2Diagnostic front panel LEDs and audible codes (continued)

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

 

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

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.

 

 

 

 

 

 

 

 

 

Red Power LED flashes

12

MXM thermal shutdown.

1.

Clean the MXM graphics card heat sink.

eleven times, once every

 

 

2.

Replace the MXM graphics card heat sink.

second, followed by a two

 

 

second pause. Beeps stop

 

 

3.

Replace the MXM graphic card.

after fifth iteration but LEDs

 

 

continue until problem is

 

 

 

 

solved.

 

 

 

 

 

 

 

 

System does not power on

None

System unable to power

Press and hold the power button for less than 4

and LEDs are not flashing.

 

on.

seconds. If the hard drive LED turns green, the

 

 

 

power button is working correctly. Try the

 

 

 

following:

 

 

 

1.

Replace the system board.

 

 

 

OR

 

 

 

 

Press and hold the power button for less than 4

 

 

 

seconds. If the hard drive LED does not turn on

 

 

 

green then:

 

 

 

1.

Check that the unit is plugged into a

 

 

 

 

working AC outlet.

 

 

 

2.

Open rear cover and check that the power

 

 

 

 

button cable is properly connected to the

 

 

 

 

system board.

 

 

 

3.

Check to see if the 5V_aux light on the

 

 

 

 

system board is turned on. If it is turned on,

 

 

 

 

then replace the power button board and

 

 

 

 

cable. If the problem persists, replace the

 

 

 

 

system board.

 

 

 

4.

Replace the AC adapter.

 

 

 

 

 

Interpreting POST diagnostic front panel LEDs 145

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HP 8300 D0K72US#ABA, 8300 C5J37AWABA manual Interpreting Post diagnostic front panel LEDs