HP Compaq dc7600 USDT Getting Started Manual page 45

Diagnostic Front Panel LEDs and Audible Codes
Activity
System does not
power on and
LEDs are not
flashing.
Getting Started
Possible
Beeps Cause
None System unable to
power on.
www.hp.com
Getting Started
Recommended
Action
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.
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