Long story short,
My TV auto-updated the previous day. My Xbox Series X worked fine prior to. The next day, not matter what I did, the signal could not be found. Xbox was powered on. The TV even changed the input icon to XBOX, but keeps saying no signal.
I plugged it into other monitors and TVs in my home with the same exact cables and it works fine. I'm assuming it had something to do with the update on the ROKU TV. Is there any fix? I want to avoid a factory reset.