Question: how to connect my vizio smart tv to my computer?
Answer: Plug one end of the HDMI or DVI cable into the computer's corresponding port. ... 
Plug the other end into your TV's corresponding port. ... 
Set the Vizio to the proper video channel, which should correspond with the video input you used (HDMI 1, HDMI 2, DVI, etc.).
Set your computer to display its images through the TV.