HP 4150 - OmniBook - PIII 500 MHz User Manual page 40

Troubleshooting
OmniBook battery discharges while docked.
Made sure that the ac adapter is plugged is connected to the dock and into an
ac outlet.
If an external PS/2 mouse or keyboard does not work
Make sure the mouse or keyboard is plugged into the correct port. The mouse
and keyboard ports look the same. See page 1-26.
Check that the PS/2 mouse is enabled in the BIOS Setup utility.
If you cannot hear audio devices or files
Fn+F7 mutes the audio system. Pressing Fn+F7 again enables sound.
Try increasing the volume. Fn + UP ARROW increases the volume.
If an external serial mouse does not work
Check that the correct serial port is enabled in the BIOS Setup utility.
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