Interpreting Post Audible Codes - HP dx2420 - Microtower PC Service & Reference Manual

Interpreting POST Audible Codes

This section covers 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.
Beeps
1 short beep and 1 long beep
followed by a three second
pause
2 short beeps and 1 long beep
followed by a three second
pause
3 short beeps and 1 long beep
followed by a three second
pause
1 short beep followed by a one
second pause
2 short beeps followed by a
three second pause
3 short beeps followed by a
three second pause
4 short beeps followed by a
three second pause
5 short beeps followed by a
three second pause
When the computer is plugged into an AC power source, voltage is always applied to the
Meaning
Bad memory or memory configuration
error.
No graphics card installed or graphics
card initialization failed.
CPU configuration error or invalid CPU
detected before graphics card initialized.
No legacy floppy drive or optical drive
found.
No floppy diskette or CD found.
Flashing not ready (missing utility or
BIOS image file, etc.)
Flashing operation has failed (checksum
error, corrupted image, etc.)
BIOS recovery was successful
Recommended Action
Check that the memory modules have been
installed correctly and that proper modules are
used.
For systems with a graphics card:
1. Reseat the graphics card. Power on the
system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics, replace the
system board.
1. Upgrade the BIOS to proper version.
2. Change the processor.
1. Check cable connections.
2. Run the Computer Setup utility and ensure
the device port is enabled.
1. Check the type of drive that you are using
and use the correct media type.
2. Replace the diskette or CD with a new one.
Upgrade the BIOS to proper version.
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently added,
remove it to see if the problem remains.
4. Clear CMOS.
5. If the message disappears, there may be a
problem with the expansion card.
6. Replace the system board.
No action required.
Interpreting POST Audible Codes 85