Appendix B Diagnostics; Interpreting Diagnostic Beep Codes - HP 510B - Minitower PC Maintenance And Service Manual

B Diagnostics

Interpreting Diagnostic Beep Codes

The Power-On Self-Test (POST) is a series of diagnostic tests that runs automatically when the
computer is powered on. If the POST detects an error, this causes an audible beep code to sound.
The POST beep codes are not necessarily accompanied by an associated, visble error code or text
message.
The following table shows the POST beep codes, their meanings, and the recommended actions for
solving the problem.
WARNING!
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 B-1 Diagnostic Beep Codes
Beeps
1 short beep, 1
long beep, 3
second pause
2 short beeps, 1
long beep, 3
second pause
3 short beeps, 1
long beep, 3
second pause
1 short beep, 1
second pause
2 short beeps, 3
second pause
When the computer is plugged into an AC power source, voltage is always applied to
Diagnosis
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
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 Setup utility and ensure the device port is enabled.
1. Check the type of drive you are using and use the correct
media type.
2. Replace the diskette or CD with a new one.
Interpreting Diagnostic Beep Codes
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