Switched Nvidia to AMD without AMD drivers now I get no signal

I'm not sure because it was screwed in smoothly and all good but it did look further out of the slot than the 1050ti does. Idk if it's something to do with the design of the card. I couldn't push it in anymore than it was though.
 
MERGED QUESTION
Question from aidanwright24 : "No signal on tv"

I know I'm using a tv to use on pc but it's the only thing I can right now.

So I've upgraded from 1050ti to rx 580 without deleting Nvidia drivers and now it just says there is no signal and won't connect to either of the cards. Connections are fine, I tried CMOS, got no other way to get a display except through a gpu so no igpu or anything.

I've been at this all day so if I seem annoyed or don't make sense that's why