I've been playing Fallout 4 since near the beginning and playing with my current mod configuration (MO2) since early February of this year. I'm in the low 20s for level in my current game and have had no issues until a few days ago. Got into a heated conflict near General Atomics Galleria and Recon Bunker Theta and accidentally disconnected my Xbox controller from my PC. After plugging it in again, it wasn't working properly and i could not select certain weapons, etc. So, I shut the game down and rebooted.
Trouble now, is that Fallout is now only taking up about 1/16th of my screen. Usually when I start the game, it opens with a small window, which then expands to the full screen. I have no idea how to expand for the game to use the full screen and it is essentially unplayable.
I've played with screen resolution and windowed/borderless options (never used before) to see if it would fix the problem. Nothing.
I've even verified file integrity through Steam.
I have no other issues with my computer and no other programs appear to have been affected. I haven't made any updates.