HP NV517UT Maintenance & Service Guide: Compaq 500B and 505B Minitower Bus - Page 69

Diagnostics, Interpreting Diagnostic Beep Codes

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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! When the computer is plugged into an AC power source, voltage is 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 B-1 Diagnostic Beep Codes Beeps Diagnosis Recommended action 1 short beep, 1 long beep, 3 second pause Bad memory or memory configuration error. Check that the memory modules have been installed correctly and that proper modules are used. 2 short beeps, 1 long beep, 3 second pause No graphics card installed or graphics card initialization failed. 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. 3 short beeps, 1 CPU configuration error or invalid 1. Upgrade the BIOS to proper version. long beep, 3 CPU detected before graphics card second pause initialized. 2. Change the processor. 1 short beep, 1 second pause No legacy floppy drive or optical drive 1. found 2. Check cable connections. Run the Setup utility and ensure the device port is enabled. 2 short beeps, 3 No floppy diskette or CD found second pause 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. 3 short beeps, 3 Flashing not ready (missing utility or Upgrade the BIOS to proper version. second pause BIOS image file, etc.) Interpreting Diagnostic Beep Codes 61

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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!
When the computer is plugged into an AC power source, voltage is 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 B-1
Diagnostic Beep Codes
Beeps
Diagnosis
Recommended action
1 short beep, 1
long beep, 3
second pause
Bad memory or memory
configuration error.
Check that the memory modules have been installed correctly and
that proper modules are used.
2 short beeps, 1
long beep, 3
second pause
No graphics card installed or
graphics card initialization failed.
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.
3 short beeps, 1
long beep, 3
second pause
CPU configuration error or invalid
CPU detected before graphics card
initialized.
1.
Upgrade the BIOS to proper version.
2.
Change the processor.
1 short beep, 1
second pause
No legacy floppy drive or optical drive
found
1.
Check cable connections.
2.
Run the Setup utility and ensure the device port is enabled.
2 short beeps, 3
second pause
No floppy diskette or CD found
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.
3 short beeps, 3
second pause
Flashing not ready (missing utility or
BIOS image file, etc.)
Upgrade the BIOS to proper version.
Interpreting Diagnostic Beep Codes
61