BIOS Error POST (Beep) Codes

During the Power-On Self-Test (POST) 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 process. If a fatal error occurs, you should consult with your system manufacturer for possible repairs.

These fatal errors are usually communicated through a series of audible beeps that can be heard on an external buzzer connected to JD1. The table shown below lists some common errors and their corresponding beep codes encountered by users.

BIOS Beep (POST) Codes

Beep Code

Error Message

Description

1 beep

Refresh

Circuits have been reset (Ready to power up)

5 short, 1 long

Memory error

No memory detected in system

5 short, 2 long

Display memory read/write error

Video adapter missing or with faulty memory

1 long continuous

System OH

System overheat condition