HP BOOK XE4500 manual Touch pad, Memory

Symptom	Call Center:	Repair Center:	Repair Center:
	Suggestions	Likely Causes	Comments
Embedded numeric	Press Fn+F8 to activate	Keyboard.
keypad does not	numeric keypad, and Lock	Motherboard.
work.	key to turn on number lock.
	Avoid touching touch pad
	while booting or resuming.
PS/2 keyboard and	Check devices separately.	Y-adapter.
mouse with Y-		PS/2 device.
adapter do not		Motherboard.
work.
Touch pad
General problems.	Reset notebook (see page 1-	Top case.
	9).	Motherboard.
	Check settings in Control
	Panel. Make sure touch pad
	is enabled in Mouse
	Properties.
	By default, touch pad is
	disabled if external PS/2
	mouse is connected, Use
	BIOS Setup to check
	settings.
	Avoid touching touch pad
	while booting or resuming.
Special touch pad	In Mouse Properties, select	Top case.
features not	Synaptics PS/2 TouchPad	Motherboard.
working.	driver. (Driver is installed
	from \hp\drivers\touchpad.)
Click button does		Top case.
not work.		Motherboard.
Memory
Out of memory	Make sure C drive has	SDRAM module.
error.	adequate free space. Delete
	temporary and unneeded
	files.
	Use memory troubleshooter
	in Windows Help.
	Not all third-party memory
	cards have been tested for
	use with notebook.
Notebook does not	Use only PC133 (XE4100) or	SDRAM module.
boot after adding	DDR-266 (XE4500) SDRAM
SDRAM.	modules.
Audio
No sound audible.	Increase sound volume.	Top case.	Check operation using
	Check whether sound is	Speaker assembly.	headphones or external
	enabled (mute button and	Switchboard PCA.	speakers (switchboard PCA).
	software controls).	Motherboard.	Make sure speaker assembly
	Check for sound resource		cable is connected.
	conflicts in Device Manager.
	Test audio with e-Diagtools
	diagnostics.

3-12 Troubleshooting and Diagnostics HP Omnibook XE4100/XE4500