Compaq 4000N Manual De Usuario
Technical Reference Guide
Compaq Personal Computers
Changed - Septembe 1997
A-1
Appendix A
ERROR MESSAGES AND CODES
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.
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 CODE MESSAGES
Table A–2. Beep Code Messages
Table A-2.
Beep Code Messages
Beeps
Error
Probable Cause
1
Refresh Failure
Faulty memory refresh circuitry.
3
Base 64-KB Memory Failure
Memory failure in first 64-KB.
4
Timer Not Operational
Same as above or timer 1 not functioning.
5
Processor Error
CPU-generated error.
6
8042 Gate A20 Failure
Keyboard controller faulty, BIOS cannot switch to
protected mode.
protected mode.
7
Processor Exception Interrupt Error
CPU-generated exception interrupt.
8
Display Memory R/W Error
Missing graphics/video adapter or faulty video memory
(system still boots).
(system still boots).
9
ROM Checksum Error
Checksum value does not match value in BIOS.
10
CMOS Shutdown Register R/W Error
CMOS RAM shutdown register failure.
11
Cache Error
Faulty cache.