hi hope someone can help with this;

i captured using a matrox avi ,plays great all in timeline and on external monitor .

needed a sunset picture so resized a jpeg down to 768*576 72dpi and imported in ok , shows in the timeline ,but when i play all i see in the monitor is the big matrox X logo , which does look funky but nothing like my sunset

i tried using the same jpegs on another PC with prem pro no problems,so it must be the way ive configured the setup?

i have only had this new PC & matrox rtx for a day and i admit to being v.new to prem pro , so i think its something simple.

if any one reading this knows please tell this simple man