HP 18XL381 manual Keyboard/Numeric Keypad Solutions, Memory Solutions

Presario 1800/1800T Series

Models: XL280, XL380, XL381,

and XL390

Keyboard/Numeric Keypad Solutions

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

Keyboard/Numeric Keypad

Problem	Probable Cause	Solution(s)
Embedded numeric	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 numeric keypad
		(Num Lock light à is 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.

Memory Solutions

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

	Memory
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 Notebook, 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, and then restart the Notebook.

Check the application documentation for memory requirements.

If necessary, install additional memory.

Remove from memory any TSR applications you do not need.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES TROUBLESHOOTING 27