Compaq dc5800 - Microtower PC Reference Guide

Solving General Problems
You may be able to easily resolve the general problems described in this section. If a problem persists
and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation,
contact an authorized dealer or reseller.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the
system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure
to disconnect the power cord from the wall outlet and allow the internal system components to cool
before touching.
Look for the LED on the system board. If the LED is illuminated, the system still has power. Power off
the computer and remove the power cord before proceeding.
Table E-1 Solving General Problems
Computer appears locked up and will not turn off when the power button is pressed.
Cause
Solution
Software control of the power switch is not functional. 1. Press and hold the power button for at least four seconds
until the computer turns off.
2. Disconnect the power cord from the electrical outlet.
Computer will not respond to USB keyboard or mouse.
Cause Solution
Computer is in standby mode. To resume from standby mode, press the power button or
press any key.
CAUTION: When attempting to resume from standby mode,
do not hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
System has locked up. Restart computer.
Computer date and time display is incorrect.
Cause Solution
RTC (real-time clock) battery may need to be replaced.
NOTE: Connecting the computer to a live AC outlet prolongs
the life of the RTC battery.
First, reset the date and time under Control Panel (Computer
Setup can also be used to update the RTC date and time). If
the problem persists, replace the RTC battery. See the
Hardware Reference Guide for instructions on installing a new
battery, or contact an authorized dealer or reseller for RTC
battery replacement.
198 Appendix E Troubleshooting Without Diagnostics

Compaq dc5800 - Microtower PC Specifications

General

Processor	Intel Core 2 Duo, Intel Pentium Dual-Core, Intel Celeron
Memory	Up to 8 GB DDR2 SDRAM
Graphics	Integrated Intel Graphics Media Accelerator 3100
Optical Drive	DVD-ROM, DVD+/-RW
Form Factor	Microtower
Expansion Slots	1 PCI, 2 PCIe x1, 1 PCIe x16
Audio	Integrated High Definition Audio
Network	Integrated Gigabit Ethernet
Ports	VGA, Serial, Parallel, PS/2, Audio in/out
Operating System	Windows Vista Business, Windows XP Professional
Power Supply	300W
USB Ports	8 USB 2.0 (2 front, 6 rear)