Screen Problem

Hi,
I’m new to using Kodi.
I have just downloaded version 16.1 Jarvis and tried to use it but my display is messed up and when I play a video I have the same problems.
The home screen is fine, but any subsequent screen looks distorted, pixellated almost.
And when a video plays the pixellation or distortion flashes on and off.
I’m using a VGA cable to connect my PC to my Sony TV.

Any help would be appreciated.