Technical Reference Guide
Compaq Personal Computers
Changed – November 2000
A-1
Appendix A
ERROR MESSAGES AND CODES
A. Appendix A ERROR MESSAGES AND CODES
A.1 INTRODUCTION
This appendix lists the error codes and a brief description of the probable cause of the error.
NOTE: Errors listed in this appendix are applicable only for systems running Compaq
BIOS.
NOTE: Not all errors listed in this appendix may be applicable to a particular system
model and/or configuration.
A.2 BEEP/KEYBOARD LED CODES
Table A–1. Beep/Keyboard LED Codes
Table A-1.
Beep/Keyboard LED Codes
Beeps LED [1] Probable Cause
1 short, 2 long NUM lock blinking Base memory failure.
1 long, 2 short CAP lock blinking Video/graphics controller failure.
2 long, 1 short Scroll lock blinking System failure (prior to video initialization).
1 long, 3 short (None) Boot block executing
None All three blink in sequence Keyboard locked in network mode.
None NUM lock steady on ROMPAQ diskette not present, bad, or drive not
ready.
None CAP lock steady on Password prompt.
None All three blink together ROM flash failed.
None All three steady on Successful ROM flash.
NOTE:
[1] PS/2 keyboard only.
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