HP ProOne 400 G1 Maintenance & Service Manual page 169

Table 10-2 Diagnostic front panel LEDs and audible codes (continued)
Activity
Red Power LED flashes nine
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
Red Power LED flashes eleven
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
Red Power LED flashes eleven
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
System does not power on and
LEDs are not flashing.
Beeps Possible Cause
9 System powers on but is
unable to boot.
11 The current processor does
not support a feature
previously enabled on this
system.
12 MXM thermal shutdown.
None System unable to power
on.
Interpreting POST diagnostic front panel LEDs
Recommended Action
1.
Unplug the AC power cord from the
computer, wait 30 seconds, then plug the
power cord back in to the computer.
2.
Replace the system board.
3. Replace the processor.
1.
Install a TXT capable processor.
2.
Disable TXT in the Computer Setup (F10)
utility.
3. Reinstall the original processor.
1.
Clean the MXM graphics card heat sink.
2. Replace the MXM graphics card heat sink.
3. Replace the MXM graphic card.
Press and hold the power button for less than 4
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.
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