I have creative 4.1 speakers it was working well before.When I connect my computer with led tv using HDMI cable only 2 speakers are working.I did these things disable HDMI sound from Nvidia Control Panel,Disable all other sound from control panel only sound blaster is enable,Disable on board sound from BIOS,update sound blaster's drivers. I have no more ideas left kindly help.My OS is WIN 7