HP P Class 733/800/866MHz / 1GHz Online Manual page 23

The MIDI keyboard
If you have been playing your keyboard through a sequencer program on your
computer, it is possible that the sequencer has turned off "Local Control" on your
makes no sound
keyboard. This avoids duplication of notes. Refer to your keyboard's documentation
for instruction on how to turn Local Control on.
CD -ROM playback
Check that the CD-ROM is connected to the "CD IN" connector on the system drive
and not the "AUX" connector.
does not work
Using Sound on Your PC
Solving Problems with Sound
English 23