HP F768WM - Manual (Page 13)

Stopping an audio CD or a DVD (fn+f10)
Press fn+f10 to stop the play of an audio CD or a DVD.
Playing previous track or section of an audio CD or a DVD (fn+f11)
While an audio CD or a DVD is playing, press fn+f11 to play the previous track of the CD or the previous
section of the DVD.
Playing next track or section of an audio CD or a DVD (fn+f12)
While an audio CD or a DVD is playing, press fn+f12 to play the next track of the CD or the next section
of the DVD.
Muting speaker sound (fn+home)
Press fn+home to mute speaker sound. Press the hotkey again to restore speaker sound.
Increasing speaker sound (fn+pg up)
Press fn+pg up to increase speaker sound. Hold down the hotkey to increase speaker sound
incrementally.
Decreasing speaker sound (fn+pg dn)
Press fn+pg dn to decrease speaker sound. Hold down the hotkey to decrease speaker sound
incrementally.
Using hotkeys 7