Post Error Messages

Numeric Codes and Text Messages

Code/Message

Beeps

Probable Cause

Recommended Action

 

 

 

 

 

303-Keyboard

None

I/O board keyboard

1.

Reconnect keyboard with

Controller Error

 

controller.

 

computer turned off.

 

 

 

2.

Replace the system board.

 

 

 

 

 

304-Keyboard or

None

Keyboard failure.

1.

Reconnect the keyboard

System Unit Error

 

 

 

with computer turned off.

 

 

 

2.

Ensure that none of the

 

 

 

 

keys are depressed.

 

 

 

3.

Replace the keyboard.

 

 

 

4.

Replace the system board.

 

 

 

 

401-Parallel

2S*

IRQ address conflicts

Reset the IRQ.

Port 1 Address

 

with another device.

 

 

Assignment

 

 

 

 

Conflict

 

 

 

 

 

 

 

 

402-Monochrome

1L,2S*

Monochrome display

Replace the Monochrome

Adapter Failure

 

controller.

display controller.

 

 

 

 

403-Parallel Port

2S*

IRQ address conflicts

Reset the IRQ.

3 Address

 

with another device.

 

 

Conflict Detected

 

 

 

 

404-Parallel Port

2S*

Both external and

Address Conflict

 

internal ports are

Detected

 

assigned to

 

 

parallel port X.

1.Remove any parallel port expansion cards.

2.Clear CMOS.

3.Reconfigure card resources and/or run Computer Setup.

410-Audio

2S*

IRQ address conflicts

Reset the IRQ.

Interrupt Conflict

 

with another device.

 

 

 

 

 

411-Network

2S*

IRQ address conflicts

Reset the IRQ.

Interface Card

 

with another device.

 

Interrupt Conflict

 

 

 

*L = Long, S = Short

A–6

Troubleshooting Guide

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Compaq Compaq Evo Desktop, 177620-006 manual Numeric Codes and Text Messages