HP Dx5150 - Compaq Business Desktop Reference Manual page 149

Solving Minor Problems (Continued)
Problem
Poor performance is
experienced.
Computer powered off
automatically and the
Power LED flashes Red
two times, once every
second, followed by a
two second pause.
Service Reference Guide, dx5150
Cause
Processor is hot.
Hard drive is full.
Low on memory.
Hard drive fragmented.
Program previously
accessed did not release
reserved memory back to
the system.
Virus resident on the hard
drive.
Too many applications
running.
Cause unknown.
Processor thermal
protection activated:
A fan may be blocked or
not turning.
OR
The heatsink is not
properly attached to the
processor.
361685-001
Troubleshooting Without Diagnostics
Possible Solution
1. Ensure airflow to the computer is
not blocked.
2. Ensure the fans are connected
and working properly (some fans
only operate when needed).
3. Ensure the processor heatsink is
installed properly.
Transfer data from the hard drive to
create more space on the hard drive.
Add more memory.
Defragment hard drive.
Restart the computer.
Run virus protection program.
1. Close unnecessary applications
to free up memory.
2. Add more memory.
Restart the computer.
1. Ensure computer air vents are not
blocked and the cooling fan is
running.
2. Open hood, press power button,
and see if the processor fan
spins. If 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. Replace the processor fan.
4. Reseat processor heatsink and
verify that the fan assembly is
properly attached.
D–3