Windows XP Pro on HP DV7 entertainment laptop, Nvidia digital audio card to watch movies. I am trying to get my laptop speakers to work when hdmi output is connected to TV. Laptop hdmi is plugged into my TV and is cloned. The speakers on my laptop have now become muted and the speakers on my TV work fine. Laptop is in my office and for reasons I would like un-mute the laptop speakers and have them operate also. Any suggestions please.