HP Compaq Presario,Presario SA4000 Getting Started Manual page 82

Power
Symptom
PC will not turn on
or start.
Invalid system disk
or
Non-System disk or
disk error
message displays
PC appears locked
up and won't turn off
when the On button
is pressed.
PC powered off
automatically.
76
Getting Started Guide
Problem
PC is not securely connected to
an external power source.
Monitor is not connected or is
not on.
Line voltage selection switch is
not in the proper position for
your country/region
(115VAC/230VAC).
Wall outlet is defective.
Wrong memory modules were
used in an upgrade, or memory
modules were installed in the
wrong location.
Hard disk drive is damaged.
After an upgrade or repair, the
drive power, data, or power
supply cables may not be
properly connected.
A diskette has been left in the
drive during startup.
PC is not working.
The unit temperature was
exceeded.
The unit temperature was
exceeded because the PC was
functioning with the cover or
access panel removed.
Processor or system fan has
failed.
Solution
Ensure that cables connecting the PC to the external power
source are plugged in properly.
Connect the monitor to the PC, plug it in, and turn it on.
Set the line voltage selection switch to the correct setting for
your country/region, or refer to the Warranty and Support
Guide to contact Support.
Test the outlet by connecting a different electrical device to
the outlet.
Reinstall the old memory to return your PC to its original state.
Refer to the Upgrading and Servicing Guide for instructions.
Press the Help ? button on the keyboard to open the Help and
Support Center, or refer to the Warranty and Support Guide
to contact Support for replacement details.
Reseat drive power, data, and power supply cables. See the
Upgrading and Servicing Guide for instructions.
When drive activity stops, remove the diskette and press the
spacebar. The PC should start up.
Press and hold the On button until the PC turns off.
Unit is in an exceedingly hot environment. Let it cool down.
Ensure PC air vents are not blocked and internal fan is
running. Note that your PC may not have an internal fan.
Replace cover or access panel, and let the PC cool down
before attempting to turn on power to the PC.
Refer to the Warranty and Support Guide to contact Support
for replacement details. Note that your PC may not have an
internal fan.