G920T - Odin Warning Screen won't respond with up and down buttons.

I have a G920T that is stuck on the Warning logo for Odin/Download mode. I need to get this unit back to the stock OS it was on as it was rooted and loaded with a ROM. But for the life in me, I am unable to get past the warning screen to get into Odin mode. I can go into recovery and wipe, cache, factory reset and use the buttons like normal. I just can't toggle the buttons to get when I am in the blue Odin interface asking to select continue or Cancel. Any help would be appreciated. Thank you.