Presario 1600XL Series

Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,

1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258

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 numberic

 

Num Lock function is not

 

Press the Shift+NumLk keys to

keypad on notebook

 

enabled.

 

enable the Num Lock function and

keyboard is disabled.

 

 

 

embedded numberic keypad. The

 

 

 

 

Num Lock light on the notebook

 

 

 

 

turns on.

 

 

 

 

 

Embedded numeric

 

External numeric keypad is

 

Disconnect the external numeric

keypad is disabled and

 

connected to the notebook.

 

keypad from the notebook.

Num Lock function is

 

 

 

 

on.

 

 

 

 

 

 

 

 

 

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 (POST) is incorrect.

“Out of Memory” message is displayed on the screen or insufficient memory error occurs during operation.

Optional memory expansion card is installed incorrectly, is incompatible with the computer, or is defective.

System ran out of memory for the application.

Too many TSR (terminate- and-stay-resident) applications are running.

Ensure that the optional memory expansion card is installed correctly.

Check the application documentation for memory requirements.

If necessary, install additional memory.

Remove from memory any TSR applications that you do not need.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1600XL SERIES

TROUBLESHOOTING 31

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Compaq 1600XL specifications Solving Keyboard/Numeric Keypad Problems, Solving Memory Problems