HP xw4000 Getting Started Manual page 25

solving general problems
problem
Computer will not
turn on.
Computer appears
locked up and will not
turn off when the power
button is pressed.
Computer will not
respond to USB
keyboard or mouse.
getting started guide
cause
Computer is not
connected to an external
power source.
Cables to the external
power source are
unplugged.
A defective PCI card has
been installed.
Drive power, data, or
power supply cables
may not be properly
connected.
The unit temperature was
exceeded. The fan may
be blocked.
Power line selector switch
on rear of computer
chassis is not switched to
correct line voltage (115V
or 230V) (some models).
Software control of the
power switch is not
functional.
Computer is in
Stand By mode.
basic troubleshooting
solution
Connect to an external power source.
Ensure that cables connecting the
computer to the external power
source are plugged in properly and
the wall outlet is active.
Remove any expansion board that
was just installed.
Reseat drive power, data, and power
supply cables.
1. Unit is in an exceedingly hot
environment. Let it cool down.
2. Ensure that computer air vents
are not blocked and internal fan
is running.
Contact an authorized reseller or
service provider.
Select the proper AC voltage using
the slide switch.
Press and hold the power button for at
least four seconds until the computer
turns off.
Press the power button to resume from
Stand By mode.
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