Compaq D51s Getting Started Guide - Page 19

Basic Troubleshooting Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes (Continued) Activity Yellow or Green Power LED flashes every second (on select models.) Beeps None Red or Yellow Power LED On. Red or Yellow Power LED is: 1. Flashing four times per second, OR 2. Flashing two times one second apart, followed by a two second pause, OR 3. Not flashing. None None Probable Cause System memory error. Processor unseated. Computer overheated. Recommended Action 1. Check memory module (see the relevant section of the Hardware Reference Guide). 2. Remove and reseat memory module. 3. See the "Solving Memory Problems" section in the Troubleshooting guide. Reseat processor in system board. 1. Install computer cover or access panel if necessary. 2. Ensure that computer air vents are not blocked and internal fan is running. Getting Started 2-11