Here is the problem I just recently was given a laptop. I was told that it was hooked up to a tv with HDMI but, there was sound on the laptop. I am running Windows 7 Premium HP Pavilion g7-1318dx Notebook PC Serial Number: 6CF2085XDS Product Number: A7A43UAR . I have no sound with just notebook speakers. I have went to the HP driver download site and tried to download the audio drivers. I receive a warning " The Hardware detected is not supported by this IDT software package. Install will now abort." There are 3 Audio downloads on the Hp website none work. The speaker Icon down by the clock with a red X on it when you do a mouse roll over it says no speakers or headphones are plugged in. I have tried headphones still no sound. I have also tried to the windows trouble shooter and it says it detects no problems. Play back devices is only showing Digital Audio (HDMI) High definition Audio device not plugged in. Recording says there are no audio devises are installed in. I have tried everything any help would be appreciated.