Compaq 133756-004 - Deskpro EN - 6550 Model 6400 Service & Reference Manual page 60

POST Error Messages
Screen Message
Flashing Power and Hard
Drive Green LEDs
Red Power LED Blinks Every
2 or More Seconds
Red Power LED Blinks Every
Second
Red power LED ON
* L = Long, S = Short
D-10 POST Error Messages
Continued
Beeps* Probable Cause
None Unseated riser board.
None Power supply overloaded.
None System memory error.
None Processor unseated.
Recommended Action
1. Remove riser board.
2. Wipe connector.
3. Reinstall riser board.
1. Push in power button. LED
should be green.
2. Remove all AC power from
computer, wait 30 seconds,
then apply power.
3. Remove load from power
supply by removing options
one at a time until computer
runs.
4. Check for damage to system
board.
5. Replace system board.
6. Replace power supply.
1. Check memory module.
2. Remove and reseat memory
module.
3. See the "Solving Memory
Problems" section of this
guide.
Reseat processor in system board.