Compaq DC7600 Troubleshooting Guide - Page 20

Power LED flashes Red, Continued - memory upgrade

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Troubleshooting Without Diagnostics Solving General Problems (Continued) Problem Cause Poor performance is experienced. (continued) Some software applications, especially games, are stressful on the graphics subsystem 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. (Beeps stop after fifth iteration but LEDs continue flashing). Cause unknown. Processor thermal protection activated: A fan may be blocked or not turning. OR The heatsink is not properly attached to the processor. Solution 1. Lower the display resolution for the current application or consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application. 2. Add more memory. 3. Upgrade the graphics solution. Restart the computer. 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. 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 the processor fan. 4. Reseat processor heatsink and verify that the fan assembly is properly attached. 5. Contact an authorized reseller or service provider. 2-8 www.hp.com Troubleshooting Guide

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www.hp.com
Troubleshooting Guide
Troubleshooting Without Diagnostics
Poor performance is
experienced.
(continued)
Some software
applications, especially
games, are stressful on the
graphics subsystem
1. Lower the display resolution for
the current application or consult
the documentation that came with
the application for suggestions on
how to improve performance by
adjusting parameters in the
application.
2. Add more memory.
3. Upgrade the graphics solution.
Cause unknown.
Restart the computer.
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. (Beeps stop after
fifth iteration but LEDs
continue flashing).
Processor thermal
protection activated:
A fan may be blocked or
not turning.
OR
The heatsink is not
properly attached to the
processor.
1. Ensure that the computer air vents
are not blocked and the
processor cooling fan is running.
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 the processor fan.
4. Reseat processor heatsink and
verify that the fan assembly is
properly attached.
5. Contact an authorized reseller or
service provider.
Solving General Problems
(Continued)
Problem
Cause
Solution