HP Compaq d330 DT Troubleshooting Guide

Troubleshooting Guide www.hp.com 2–7
Troubleshooting Without Diagnostics
System does not power
on and the LEDs on the
front of the computer
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, then:
1. Check that the voltage selector,
located on the rear of the power
supply, is set to the appropriate
voltage. Proper voltage setting
depends on your region.
2. Remove the expansion cards one
at a time until the 3.3 V_aux light
on the system board turns on.
3. 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 3.3 V_aux
light on the system board is
turned on. If it is turned on, then
replace the power button
harness.
5. If the 3.3 V_aux light on the
system board is not turned on,
then replace the power supply.
6. Replace the system board.
Solving General Problems (Continued)
Problem Cause Solution

HP Compaq d330 DT Specifications

General

Brand	HP
Model	Compaq d330 DT
Category	Desktop
Language	English