HP Dc7100 Troubleshooting Guide - Page 23
Power LED flashes Red, Continued
UPC - 829160356877
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Troubleshooting Without Diagnostics Solving General Problems (Continued) Problem Cause Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. Processor thermal protection activated: A fan may be blocked or not turning. OR The heatsink is not properly attached to the processor. Solution 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. 2. Reboot the system and observe if there are any POST messages stating that one or more of the fans are not detected. If a fan is not detected during POST, unplug the unit, open the chassis and ensure that the all the fans are plugged in correctly. 3. If fan is plugged in and seated properly, and the POST message still appears, then replace the processor fan. 4. Reseat processor heatsink and verify that the fan assembly is properly attached. See the appropriate Service Reference Guide for instructions on how to reinstall the heatsink. Correct heatsink installation is critical to proper system operation. 5. Contact an authorized reseller or service provider. 2-8 www.hp.com Troubleshooting Guide