Games Load only Audio (displays a white screen)

[JeffersonWebster]

Hello all, 

I am just getting things set up for the first time, and everything seems to be working except for when I load the actual games. As the load up, it displays a border (Mame for Mame games). Then the audio plays, but the screen remains all white. Do I need to change my aspect ratio or something? 
 

Any guidance is appreciated. Thanks all.