Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920

Solving Hardware Installation Problems

Problem

 

Probable Cause

 

Solutions(s)

 

 

 

 

 

A new device is not recognized as part

 

Cable(s) of new external device are

 

Ensure that all cables are properly

of the computer system.

 

loose or power cables are

 

and securely connected.

 

 

unplugged.

 

 

 

 

 

 

 

 

 

Power switch of new external device

 

Turn off the computer, turn on the

 

 

is not turned on.

 

external device, then turn on the

 

 

 

 

computer to integrate the device

 

 

 

 

with the computer system.

 

 

 

 

 

 

 

Device is not seated properly.

 

Turn off the computer and reinsert

 

 

 

 

the device.

 

 

 

 

 

Solving Keyboard/Numeric Keypad Problems

Some common causes and solutions for keyboard/numeric keypad problems are listed in the following table.

Solving Keyboard/Numeric Keypad Problems

Problem

 

Probable Cause

 

Solution(s)

 

 

 

 

 

Embedded numeric keypad on computer

 

Num Lock function is not enabled.

 

Press the Shift + NumLk keys to

keyboard is disabled.

 

 

 

enable the Num Lock function and

 

 

 

 

embedded numeric keypad. The

 

 

 

 

Num Lock icon on the status panel

 

 

 

 

turns on.

 

 

 

 

 

Embedded numeric keypad is disabled and

 

External numeric keypad is

 

Disconnect the external numeric

Num Lock function is on.

 

connected to the computer.

 

keypad from the computer.

 

 

 

 

 

Solving Memory Problems

Some common causes and solutions for memory problems are listed in the following table.

Solving Memory Problems

Problem

 

Probable Cause

 

Solution(s)

 

 

 

 

 

Memory count during Power-On Self-Test

 

Optional memory expansion card

 

Ensure that the optional memory

(POST) is incorrect.

 

is installed incorrectly,

 

expansion card is installed

 

 

is incompatible with the computer,

 

correctly.

 

 

or is defective.

 

 

 

 

 

 

 

"Out of Memory" message is displayed on

 

System ran out of memory for the

 

Check the application

the screen or insufficient memory

 

application.

 

documentation for memory

error occurs during operation.

 

 

 

requirements.

 

 

 

 

Install additional memory.

 

 

 

 

 

 

 

 

 

 

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