HP Compaq dx2400 Quick Start Manual page 21

WARNING!
always applied to the 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.
Table 2 Solving Hardware Installation Problems
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.
ENWW
When the computer is plugged into an AC power source, voltage is
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 Windows 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.
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. Listen for beeps from the computer. See the
Troubleshooting Guide to determine possible
causes.
3. If you still cannot resolve the issue, contact
Customer Support.
Basic Troubleshooting 13