In your display settings where you saw the numbers 1 and 2...
Using your VGA cable connected to your computer select identify and see what number you see in your TV. If you get the number 2 on your TV, in the display settings in your computer select the monitor with the number 2 and select the option to make that monitor your primary display. The reason you are just getting a wallpaper is because the computern is using your TV as a secondary monitor. Alternatively you can try moving your mouse past the outer edges of your computer screen until you see your mouse on the TV.
Using your VGA cable connected to your computer select identify and see what number you see in your TV. If you get the number 2 on your TV, in the display settings in your computer select the monitor with the number 2 and select the option to make that monitor your primary display. The reason you are just getting a wallpaper is because the computern is using your TV as a secondary monitor. Alternatively you can try moving your mouse past the outer edges of your computer screen until you see your mouse on the TV.