Yes but i still think its a gpu failure because of the picture. I can boot into windows but i think Windows only works because there is no Driver for the AMD GPU
I don't think that is incorrect. The integrated gpu is not the default, and it will use that by default. It would have to use software based rendering, which is horrendously slow. It would not be mistaken for a moderate drop in performance, and you wouldn't have a normal resolution.
The lack of an installed driver from AMD is irrelevant, given that there isn't any graphics switching. I noticed that stupid band comes up for me upon resetting nvram. It doesn't seem to exactly track the same issues as other graphics problems.
The people saying dead gpu here should back that one up. This model has a lot of problems, yet I am not aware of any circumstance where a dead gpu would still boot into windows. The bootloader would still go through and initialize that gpu, which shouldn't allow it to continue in that case.