Why does the HDMI audio not work on my new Acer Predator AG6-710 The HDMI audio may not work the first time you boot your Acer Predator AG6-710. This is caused by the audio driver not loading properly on initial setup. You can fix this by restarting your computer. This issue should only happen the first time you boot up your product and will be resolved after you restart your computer for the first time.