HP ProDesk 400 G2 Small Form Factor User Manual

Activity Beeps Possible cause Recommended action
3. Replace the system board.
4. Replace the processor.
Red Power LED flashes ten
times, once every second,
followed by a two second pause.
Beeps stop after fifth iteration
but LEDs continue until problem
is solved.
10 Bad option card. 1. Check each option card by removing the card
(one at a time if multiple cards), then power on
the system to see if fault goes away.
2. Once a bad card is identified, remove and
replace the bad option card.
3. Replace the system board.
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.
11 The current processor does
not support a feature
previously enabled on this
system.
▲
Reinstall the original processor.
System does not power on and
LEDs are not flashing.
None System unable to power on. Press and hold the power button for less than 4
seconds. If the hard drive LED turns white, the power
button is working correctly. Try the following:
1. Check that the voltage selector (some models),
located on the rear of the power supply, is set
to the appropriate voltage. Proper voltage
setting depends on your region.
2. 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 white
then:
1. Check that the unit is plugged into a working
AC outlet.
2. Open hood and check that the power button
harness is properly connected to the system
board.
3. Check that both power supply cables are
properly connected to the system board.
4. 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 harness. If the
problem persists, replace the system board.
5. If the 5V_aux light on the system board is not
turned on, remove the expansion cards one at
a time until the 5V_aux light on the system
board turns on. It the problem persists, replace
the power supply.
114 Chapter 7 POST error messages

HP ProDesk 400 G2 Small Form Factor Specifications

General

Brand	HP
Model	ProDesk 400 G2 Small Form Factor
Category	Desktop
Language	English