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A–6 Troubleshooting Guide
Post Error Messages
303-Keyboard
Controller Error
None I/O board keyboard
controller.
1. Reconnect keyboard with
computer turned off.
2. Replace the system board.
304-Keyboard or
System Unit Error
None Keyboard failure. 1. Reconnect the keyboard
with computer turned off.
2. Ensure that none of the
keys are depressed.
3. Replace the keyboard.
4. Replace the system board.
401-Parallel
Port 1 Address
Assignment
Conflict
2S* IRQ address conflicts
with another device.
Reset the IRQ.
402-Monochrome
Adapter Failure
1L,2S* Monochrome display
controller.
Replace the Monochrome
display controller.
403-Parallel Port
3 Address
Conflict Detected
2S* IRQ address conflicts
with another device.
Reset the IRQ.
404-Parallel Port
Address Conflict
Detected
2S* Both external and
internal ports are
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
Interrupt Conflict
2S* IRQ address conflicts
with another device.
Reset the IRQ.
411-Network
Interface Card
Interrupt Conflict
2S* IRQ address conflicts
with another device.
Reset the IRQ.
*L = Long, S = Short
Numeric Codes and Text Messages
Code/Message Beeps Probable Cause Recommended Action
177620-006.book Page 6 Thursday, March 14, 2002 3:16 PM