MacBook Pro won't properly display Vizio tv through HDMI connection
I have been unable to get my MacBook Pro to properly mirror its screen to a Vizio E420i tv using HDMI. I have no problems when connecting to my Samsung tv. When I connect my MBP to the Vizio through HDMI my laptop screen will display on the tv for a few seconds but my laptop screen itself goes black. Then the tv screen goes black except for the top bar with the Apple logo and Finder. I can't see any options under either of these when I hover over them. If I scroll down slowly from either one then the options will appear in white when I scroll over them and then disappear when my cursor moves. I have tried finding the Display settings doing this but even when I am able to find and click on them I can't see whatever has popped up. I cannot get the cursor to move to my laptop either. It is stuck on the tv. I have Mirroring always on in my Display settings. I think it may be a screen extension issue but I have no idea how to resolve it.
Any suggestions? TIA