Troubleshooting Without Diagnostics

Solving General Problems (Continued)

Problem

Cause

Solution

 

 

 

Computer date and

RTC (real-time clock)

First, reset the date and time under

time display is

battery may need to be

Control Panel (Computer Setup

incorrect.

replaced. Battery life is

can also be used to update the

 

approximately 3–5 years.

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 your Compaq

 

 

authorized dealer or reseller for RTC

 

 

battery replacement.

Computer powered off automatically and the Power LED is:

1.Flashing Red or Yellow four times per second, OR

2.Flashing Red or Yellow two times one second apart, followed by a two second pause, OR

3.Not flashing.

The unit temperature was exceeded. A fan may be blocked or not turning.

OR the heatsink is not properly attached to the processor.

1.Unit is in an exceedingly hot environment. Let it cool down.

2.Ensure computer air vents are not blocked and internal fans are running (such as the power supply fan, chassis fan, and/or the processor fan).

3.Ensure heatsink is properly seated.

4.Contact Compaq authorized reseller or service provider.

The unit temperature was

Replace cover or access panel, and

exceeded because the

let the computer cool down before

computer was functioning

attempting to turn on power to the

with the cover or access

computer.

panel removed.

 

Air Baffle (if required) is not installed properly to redirect air flow over processor.

Reseat Air Baffle per instructions in the Hardware Reference Guide.

Processor or system fan

Contact a Compaq authorized

has failed.

service provider to replace the

 

processor or system fan.

 

 

2–4

Troubleshooting Guide

Page 18
Image 18
Compaq Compaq Evo Desktop, 177620-006 manual Control Panel Computer Setup, See the Hardware Reference Guide