HP Notebook PC Reference Manual page 110

Troubleshooting and Maintenance
Troubleshooting Your Computer
• If an external mouse is connected, the built-in pointing devices are normally disabled.
You can change this setting with the BIOS Setup utility—see "To run the BIOS Setup
utility" on page 127.
• Restart the computer: click Start, Shut Down (or Turn Off Computer), Restart.
If the touch pad moves the pointer or cursor while you type
• If your model has no pointing stick, press the touch pad on-off button to turn off the
touch pad while you type. (If your model has a pointing stick, see the following
suggestions instead.)
• Increase the PalmCheck setting for the touch pad:
1. Double-click the touch pad icon in the taskbar.
–or–
Click Start, Settings, Control Panel, then double-click Mouse (Windows 98 or
2000), or click Start, Control Panel, Printers and Other Hardware, Mouse
(Windows XP).
2. Click the TouchPad tab, and select the touch pad device.
3. Adjust the PalmCheck slider, and click Apply.
• Disable the touch pad: on the TouchPad tab, select the touch pad device, then select
Disable and click Apply.
If a PS/2 scroll mouse doesn't work
• The built-in pointing devices must be disabled for the mouse's scroll feature to work.
In the BIOS Setup utility, make sure the PS/2 Pointing Devices option in the System
Devices menu is set to Auto. See "To run the BIOS Setup utility" on page 127.
• Suspend or shut down the computer before you attach the scroll mouse, so that it will
be detected properly.
If you want to use the touch pad again, you must suspend or shut down the computer
before you detach the scroll mouse.
• Test the keyboard and pointing devices with the e-Diagtools diagnostics. See "Testing
the Hardware" on page 125.
If the embedded numeric keypad doesn't work
• To type numbers, make sure Num Lock is on.
• Make sure the embedded Keypad Lock (Fn+F8) is on—or that you press and hold the
Fn key to temporarily access the embedded keypad.
110 Reference Guide