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A.1 BIOS Error POST (Beep) Codes
Note: For BIOS beep codes to work properly, please connect an optional external
speaker to the speaker/buzzer header located at JD1. Please refer to Chapter 2 for
more information on JD1.
During the POST (Power-On Self-Test) routines, which are performed each time the system
is powered on, errors may occur.
Non-fatal errors are those which, in most cases, allow the system to continue the boot-up
process. The error messages normally appear on the screen.
Fatal errors are those which will not allow the system to continue the boot-up procedure. If
a fatal error occurs, you should consult with your system manufacturer for possible repairs.
The fatal errors are usually communicated through repeated patterns of audible beeps. Each
pattern of audible beeps listed below corresponds to its respective error.
Beep Code
Error Message
1 beep
Refresh
5 short, 1 long
Memory error
5 long, 2 short
Display memory read/write error
1 long continuous
System OH
A.2 Additional BIOS POST Codes
The AMI BIOS supplies additional checkpoint codes, which are documented online at
www.supermicro.com/support/manuals/
Appendix A
BIOS Codes
BIOS Beep (POST) Codes
Description
Circuits have been reset (Ready to power up)
No memory detected in system
Video adapter missing or with faulty memory
System overheat condition
("AMI BIOS POST Codes User's Guide").
135
Appendix A: BIOS Codes
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