Compaq dx2355 - Microtower PC Troubleshooting Manual page 23

Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity
3 short beeps and 1
long beep followed by a
three second pause.
2 short beeps followed
by a three second
pause.
3 short beeps followed
by three seconds pause.
Troubleshooting Guide
Beeps Recommended Action
4 CPU configuration error or invalid CPU detected before
graphics card initialized.
1. Upgrade the BIOS to proper version.
2. Change the processor.
2 short No floppy diskette or CD found.
beeps
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.
3 short Upgrade the BIOS to proper version.
beeps
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Troubleshooting
2–13