moviegrl17 The dxdiag is actually very informative to me, in that it shows you've plugged your monitor into the motherboard. Please plug it directly into the graphics card instead.
If that alone doesn't help, please install the newest driver from Nvidia:
https://www.nvidia.com/en-us/drivers/details/245376/
Run the installer as an admin: right-click the download and select "Run as administrator." Choose the Custom (not Express) install method, and check the box to perform a clean install. When you're given a list of features to install, make sure the audio/sound driver is selected. Restart your computer after installing the driver and before trying to play.