HP dc5100 - Microtower PC Service & Reference Guide

Service Reference Guide, dc5100 376220-001 D–3
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.
Close unnecessary applications.
Add more memory.
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 fan.
4. Reseat processor heatsink and
verify that the fan assembly is
properly attached.
Solving Minor Problems (Continued)
Problem Cause Possible Solution

HP dc5100 - Microtower PC Specifications

General

Processor	Intel Pentium 4 or Intel Celeron D
Memory	Up to 4 GB DDR2 SDRAM
Network	Integrated Broadcom NetXtreme Gigabit Ethernet
Operating System	Windows XP Professional
Optical Drive	DVD-ROM, CD-RW, or DVD+/-RW
Graphics	Intel Graphics Media Accelerator 900
Audio	Integrated audio
Expansion Slots	1 PCI Express x16, 3 PCI
Ports	1 Serial, 1 Parallel
Weight	Approx. 22 lbs (10 kg)
Processor Speed	Up to 3.8 GHz
Storage	40 GB to 250 GB HDD