Compaq Service Reference Guide D-11
POST Error Messages
Continued
Screen Message Beeps* Probable Cause Recommended Action
Num Lock LED on
Keyboard
None Failed Boot Block. Reflash the ROM using a ROMPaq
diskette.
Red Power LED Blinks Every
2 or More Seconds
None Power supply overloaded. 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.
Red Power LED Blinks Every
Second
None System memory error. 1. Check memory module.
2. Remove and reseat memory
module.
3. See the "Solving Memory
Problems" section of this guide.
Red power LED ON None Processor unseated. Reseat processor in system board.
(Resume = F1 KEY) None As indicated to continue. Press F1.
XXOOOYZZ Parity Check None Parity RAM failure. Run Computer Setup and
Diagnostic Utilities.
* L = Long, S = Short
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