HP Deskpro /M Desktop PC 486/25M Deskpro Personal Computers Service Reference - Page 53

-501, L = Long, S = Short

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POST Error Messages Continued Screen Message 301-Keyboard Error Beeps* None Probable Cause Keyboard failure. Recommended Action 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Ensure that none of the keys are depressed. 4. Replace keyboard. 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 keyboard. 4. Replace system board. 401-Parallel Port 1 Address 2S Assignment Conflict IRQ address conflicts with another device. Reset the IRQ. 403-Parallel Port 3 Address 2S Assignment Conflict IRQ address conflicts with another device. Reset the IRQ. 404-Parallel Port Address 2S Conflict Detected Both external and internal ports are assigned to parallel port X. 1. Remove any parallel expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup (F10 Setup). 410-Audio Interrupt Conflict 2S IRQ address conflicts with another device. Reset the IRQ. 411-Network Interface Card 2S Interrupt Conflict IRQ address conflicts with another device. Reset the IRQ. 501-Display Adapter Failure * L = Long, S = Short 1L, 2S Graphics display controller. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. 3. Verify the monitor is attached and turned on. 4. Replace the graphics controller. continued Deskpro Service Reference Guide D-3

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Deskpro Service Reference Guide
D-3
POST Error Messages
Continued
Screen Message
Beeps*
Probable Cause
Recommended Action
301-Keyboard Error
None
Keyboard failure.
1.
Reconnect keyboard with
computer turned off.
2.
Check connector for bent or
missing pins.
3.
Ensure that none of the keys
are depressed.
4.
Replace keyboard.
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 keyboard.
4.
Replace system board.
401-Parallel Port 1 Address
Assignment Conflict
2S
IRQ address conflicts with
another device.
Reset the IRQ.
403-Parallel Port 3 Address
Assignment Conflict
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 expansion
cards.
2.
Clear CMOS.
3.
Reconfigure card resources
and/or run Computer Setup
(F10 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.
501-Display Adapter
Failure
1L, 2S
Graphics display controller.
1.
Reseat the graphics card (if
applicable).
2.
Clear CMOS.
3.
Verify the monitor is attached
and turned on.
4.
Replace the graphics
controller.
* L = Long, S = Short
continued