HP Rp3000 - Point of Sale System Reference Manual page 118

WARNING!
system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure
to disconnect the power cord from the wall outlet and allow the internal system components to cool
before touching.
Look for the LED on the system board. If the LED is illuminated, the system still has power. Power off
the computer and remove the power cord before proceeding.
Table D-9
A new device is not recognized as part of the system.
Cause
Device is not seated or connected properly.
Cable(s) of new external device are loose or power cables are
unplugged.
Power switch of new external device is not turned on.
When the system advised you of changes to the configuration,
you did not accept them.
A plug and play board may not automatically configure when
added if the default configuration conflicts with other devices.
USB ports on the computer are disabled in Computer Setup.
Computer will not start.
Cause
Wrong memory modules were used in the upgrade or memory
modules were installed in the wrong location.
110 Appendix D Troubleshooting Without Diagnostics
When the computer is plugged into an AC power source, voltage is always applied to the
Solving Hardware Installation Problems
Solution
Ensure that the device is properly and securely connected and
that pins in the connector are not bent down.
Ensure that all cables are properly and securely connected and
that pins in the cable or connector are not bent down.
Turn off the computer, turn on the external device, then turn on
the computer to integrate the device with the computer system.
Reboot the computer and follow the instructions for accepting
the changes.
Use Device Manager to deselect the automatic settings for the
board and choose a basic configuration that does not cause a
resource conflict. You can also use Computer Setup to
reconfigure or disable devices to resolve the resource conflict.
Enter Computer Setup (F10) and enable the USB ports in
Security > Device Security.
Solution
1. Review the documentation that came with the system to
determine if you are using the correct memory modules
and to verify the proper installation.
2. Observe the beeps and LED lights on the front of the
computer. Beeps and flashing LEDs are codes for
specific problems.
3. If you still cannot resolve the issue, contact Customer
Support.