HP Compaq Businessdc7600, Service & Reference Manual

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Service Reference Guide, dc7600 390742-001 D–3
Troubleshooting Without Diagnostics
Poor performance is
experienced.
(continued) Program previously
accessed did not release
reserved memory back to
the system Restart the computer.
Virus resident of the hard
drive. Run virus protection program.
Too many applications
running. 1. Close unnecessary applications.
2. Add more memory.
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 continue
for five iterations after
which the LED flashes
will continue until the
problem is resolved. Processor thermal
protection activated:
A fan may be blocked or
not turning.
OR
The heatsink is not
properly attached to the
processor. 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
heatsink-fan assembly.
4. Reseat processor heatsink-fan
assembly and verify that the fan
is properly connected to the
system board.
Solving Minor Problems (Continued)
Problem Cause Possible Solution