HP Compaq 6005 Pro Business PC Maintenance & Service Manual page 214

Table D-1 Solving General Problems (continued)
Poor performance is experienced.
Cause
Too many applications running.
Some software applications, especially games, are stressful
on the graphics subsystem
Cause unknown.
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
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
202 Appendix D Troubleshooting Without Diagnostics
Solution
1. Close unnecessary applications to free up memory.
2. Add more memory. Some applications run in the
background and can be closed by right-clicking on their
corresponding icons in the task tray. To prevent these
applications from launching at startup, go to Start >
Run (Windows XP) or Start > Accessories > Run
(Windows Vista) and type msconfig. On the Startup tab
of the System Configuration Utility, clear applications that
you do not want to launch automatically.
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.
Solution
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.
3. If fan is plugged in, but is not spinning, then replace the
heat sink/fan assembly.
4. Contact an authorized reseller or service provider.