Not sure if this is the correct category to put this in, but I'm using Windows 8.1, and sense I'm not sure what the actual problem is here I'll just put this here.
Recently bought Quiplash on Steam, and because it is a game meant to be played on TVs, I decided to set that up. Sense the TV is on the complete opposite site of the room I got out my "way too long HDMI cable". However, guess what??? I didn't work. The TV just says "Searching for signal..." endlessly. I'm not surprised, really, I'm not, no tech ever seems to like me or anything. So I tried some things. I tested if the problem was with the TV or HDMI cable by trying it on a laptop (the PC that isn't working is a desktop btw), and everything worked with the laptop. So that narrowed it down to it being my PC. If I look in the display settings, Windows isn't recognizing the TV as a display. My PC worked with the cable before I tried it today, and in the time I wasn't using it I upgraded from AMD integrated graphics to a GTX 1050 Ti. So I thought maybe that might have to do with it. I tried messing around in the nvidia settings but nothing fixes it.
[TV is also a Sharp/Roku one sorry forgot to mention]