Okay. This is a weird problem, and the threads Google has pointed me to are not helping.
Since last night, Skyrim Special Edition has stopped accepting ALL command inputs on my PC. The arrow and enter keys work enough that I can load a save, but after that, my keyboard, mouse, and gamepad all produce no inputs, save the `/~ key used to activate and close the console. I have used ini tweaks, attempting to use the console on the main menu, reverting to prior saves, uninstalling or reinstalling all the mods I changed last night, but nothing is working.
Sometime between 5AM today (when I turned Skyrim off) and 3PM today (when I booted it back up), it decided to refuse all command inputs from every device I have connected to it. I have no idea how or why and I have even fewer ideas on how to fix it.
SOMEONE. HELP.