Interpreting Post Diagnostic Front Panel Leds And Audible Codes - HP dx2810 - Microtower PC Service & Reference Manual

A new device is not recognized as part of the system.
Cause
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.
Interpreting POST Diagnostic Front Panel LEDs and
Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
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.
NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the
computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be performed.
Not all diagnostic lights and audible codes are available on all models.
Table C-1 Diagnostic Front Panel LEDs and Audible Codes
Activity
Green Power LED On.
When the computer is plugged into an AC power source, voltage is always applied to the
Beeps
None

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 143

Solution
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
Interpreting POST Diagnostic Front Panel
LEDs and Audible Codes on page 143
determine possible causes.
3. If you still cannot resolve the issue, contact
Customer Support.
Possible Cause
Computer on.
Recommended Action
None
to