HP xw4100 Getting Started Manual page 57

Activity
System does not
power on and LEDs
are not blinking.
Getting Started Guide
Possible
Beeps Cause
None System
unable to
power on.
www.hp.com
Troubleshooting
Recommended
Action
Press and hold the power
button for less than 4 seconds.
If the hard drive LED turns
green, then:
1. Remove the expansion
cards one at a time until
the 5.5 V_aux light on the
system board turns on.
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 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 5.5
V_aux light on the system
board is turned on. If it is
turned on, then replace
the power button harness.
5. If the 5.5 V_aux light on
the system board is not
turned on, then replace
the power supply.
6. Replace the system board.
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