how do i connect my computer back to my tv so i could just set a movie from on damand and put it on my televison
using a desk/laptop and a chromecast 'dongle' you can use the chrome browser to chromecast your screen to the TV (with the sound). Be sure to maximize the screen on the desk/laptop. to do something else on the pc you can use att+tab to get to other windows.
If you have certain models of samsung or LG televisions you can play some 4k content using an app on the TV itself.
Purchasing another piece of equipment is not an answer. Capabilities were removed, and there is no clear reason why.
People want to change their Current Channel/DVR from their computer, without using their phone. It is very simple. I used it fairly frequently and it worked great. Now, I can watch shows on my computer, but that isn't what we were looking for.