I uninstalled both as you suggested and restarted my laptop with the HDMI cable plugged in. After a few minutes it did reinstall the drivers. However, I am still not getting any sound in the TV. And my Playback Devices are the same as the first image in this post. I still get the Digital Audio (HDMI) device listed as "Not plugged in". Also, when I plug in my HDMI cable, the video on the TV is not adjusting to the correct resolution (as I assume it would). There are items along the edges of the screen which are partially cut-off. I also get a message which says I need to adjust my resolution. The thing is, when I plug in the other laptop (HP ProBook) the screen adjust automatically and, as I have said before, the audio also work. I am at my wits end here. I cannot understand why I can't get this to work. Please help. Thank you.
Alex...