Help please. I had my laptop plugged in to the hdmi on my seiki tv.... after our movie was done I watched the satellite for a while and it worked fine. I turned the TV off and went to bed. When I woke up sound was not working when watching with satellite. Everything is plugged in right. I've unplugged the computer. The sound still works when using the DVD player only. Everything seems to be plugged in properly.... none of the other cords were touched. I don't get it