HP Deskpro 1000 Deskpro Personal Computers Service Reference Guide - Page 60
Red Power LED Blinks Every, Red power LED
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POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action Flashing Power and Hard Drive Green LEDs None Red Power LED Blinks Every None 2 or More Seconds Red Power LED Blinks Every None Second Red power LED ON * L = Long, S = Short None Unseated riser board. 1. Remove riser board. 2. Wipe connector. 3. Reinstall riser board. 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. System memory error. 1. Check memory module. 2. Remove and reseat memory module. 3. See the "Solving Memory Problems" section of this guide. Processor unseated. Reseat processor in system board. D-10 POST Error Messages