HP dx2308 HP Compaq dx2300 and dx2308 Business PC Service Reference Guide, 1st - Page 98

Activity, Possible Cause, Recommended Action, Green Power LED flashes eight

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Activity Possible Cause Green Power LED flashes six times, Pre-video graphics error. once every second, followed by a two second pause. Green Power LED flashes eight Invalid ROM based on bad times, once every second, followed checksum. by a two second pause. System does not power on and LEDs System unable to power on. are not flashing. Recommended Action For systems with a graphics card: 1. Reseat the graphics card. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. 1. Reflash the system ROM with the latest BIOS image. 2. Replace the system board. 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. 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 green 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. 90 Appendix C Troubleshooting ENWW

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Activity
Possible Cause
Recommended Action
Green Power LED flashes six times,
once every second, followed by a
two second pause.
Pre-video graphics error.
For systems with a graphics card:
1
.
Reseat the graphics card.
2
.
Replace the graphics card.
3
.
Replace the system board.
For systems with integrated graphics, replace the system
board.
Green Power LED flashes eight
times, once every second, followed
by a two second pause.
Invalid ROM based on bad
checksum.
1
.
Reflash the system ROM with the latest BIOS image.
2
.
Replace the system board.
System does not power on and LEDs
are not flashing.
System unable to power on.
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
.
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 green 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.
90
Appendix
C
Troubleshooting
ENWW