Does the video appear to even be loading? Have you tried a different device? Is the device you're using connected via WiFi or a LAN cable, and if the former, please try a device connected with the latter method to see if it makes any difference.
When using a single device that is connected to the modem with a LAN cable, what is the speed you get when you run a 25MB download speed test at the following...
Please post a link to the result.
Edit: I should have said this in the first place, but it would be best for you to repost your question in the Tech Support section. You can also post the answers to these questions in that post. You can start the new post in Tech Support here.... https://community.hughesnet.com/t5/forums/postpage/board-id/TechSupport
Check out this troubleshooting guide from YouTube on how to fix the issue you are experiencing: Green screen in video player
It's been a while since we've heard from you, so this thread will be closed. If you continue having issues with YouTube or need assistance with anything else, please feel free to create a new thread.