HP OmniBook 4150 Reference Manual page 103

If the touch pad or pointing stick doesn't work
Do not move the pointer while the OmniBook is resuming from Suspend or rebooting.
If you moved the pointer, try pressing a key on the keyboard. You may have to
suspend and resume using the power button, or you may have to shut down and restart
Windows.
Make sure the touch pad or pointing stick is enabled in the BIOS Setup utility.
1. From the Start menu, shut down, then restart the OmniBook.
2. When you see the HP logo, press F2 to enter the BIOS Setup utility.
3. From the System Devices menu, check Internal Pointing Devices.
4. Select the desired pointing device or both devices.
5. Press F10 to Save and Exit the BIOS Setup utility.
Reset the OmniBook. See "To reset the OmniBook" on page 21.
If the embedded numeric keypad doesn't work
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.
To type numbers, make sure Num Lock is on.
If a special feature on the PS/2 mouse doesn't work
The built-in pointing devices must be disabled for special mouse features to work. In
the BIOS Setup utility, check that the PS/2 Pointing Devices option is set to Auto in
the System Devices menu. See "To run the BIOS Setup utility" on page 86.
Press the blue power button to suspend the OmniBook, then press it again to resume.
Make sure you installed any drivers shipped with the mouse.
If left CTRL + left ALT doesn't work on an external keyboard
Left CTRL + left ALT should work like the Fn key on an external keyboard. In BIOS
Setup, check that External Fn Key is enabled in the System Devices menu. See "To
run the BIOS Setup utility" on page 86.
If you can't type the euro symbol
Hold ALT GR when you press the marked key.
Troubleshooting
Solving Problems
Reference Guide 103