Render Mode Nodes not working

A black screen keeps coming up when i have a gaussian blur node connected to my drawing and I have a color card attached in the time like… When I unattached the node, the drawing element returned with a black background and not the color of my color card . I am using a Samsung Galaxy book gen 1 with an i5 7200u CPU graphics card Intel® HD Graphics 620 with 8 gigs of ram

Do you have everything connected in the proper sequence?

The node layout should look like this:

COLOUR CARD

(green cord out bottom connects to top of Drawing (tvg) (also out bottom is a blue cord which connects to the top of the Composite)

DRAWING (tvg)

(blue cord out bottom connects to top of Gaussian Blur)

GAUSSIAN BLUR

(blue cord out bottom connects to top of Composite)

COMPOSITE (Composite receives cords from Gaussian Blur and Colour Card)

(blue cord out bottom connects to Write) (another blue cord out bottom connects to Display)

WRITE and DISPLAY