HP Dx5150 Troubleshooting Guide - Page 70
Diagnostic Front Panel LEDs and Audible Codes, Activity, Beeps, Possible, Cause, Recommended Action
UPC - 882780485433
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POST Error Messages Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes two times, once every second, followed by a two-second pause. The Power LED will continue flashing until the problem is resolved. None Processor thermal protection activated: A fan may be blocked or not turning. OR The heatsink/fan assembly is not properly attached to the processor. 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. Leave a 4-inch (10.2-cm) clearance at the back of the system unit and above the monitor to permit the required airflow. 2. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/properly seated or installed. 3. If fan is plugged in and seated properly, but is not spinning, then replace processor fan. 4. Reseat processor heatsink and verify that the fan assembly is properly attached. 5. Contact an authorized reseller or service provider. Red Power LED flashes three times, once every second, followed by a two-second pause. The Power LED will continue flashing until the problem is resolved. None Processor not installed (not an indicator of bad processor). 1. Check to see that the processor is present. 2. Reseat the processor. A-6 www.hp.com Troubleshooting Guide