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Technical Reference Guide
Compaq Personal Computers
Changed – April 1998
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
that not all errors listed in this appendix may be applicable to a particular system depending on
the model and/or configuration.
A.2
POWER-ON MESSAGES
Table A–1.
Power-On Messages
Table A-1.
Power-On Messages
Message Beeps Probable Cause
CMOS Time and Date Not Set (None) Invalid time or date
(none) 2 short Power-On successful
Run Setup (None) Any failure
A.3
BEEP/KEYBOARD LED CODES
Table A–2.
Beep/Keyboard LED Codes
Table A-2.
Beep/Keyboard LED Codes
Beeps LED Blinking [1] Probable Cause
1 short, 2 long NUM Lock Base memory failure.
1 long, 2 short CAP Lock Video/graphics controller failure.
2 long, 1 short Scroll Lock System failure (prior to video initialization).
NOTE:
[1] PS/2 keyboard only.