Do note:
There is a bend in IO shield in the part shown below (have attached gpu pics as well), I did this myself while installing the GPU. Ideally this should go inside the case but it was not fitting in my case, worked fine in previous case, I can bend it back if needed.
Not gonna lie you really massacred that IO Bracket. All you had to do was bend it slightly inward instead of outward. It would have easily slid in the gap between PC case and motherboard.
Well what’s done is done but if anyone is wondering this can be easily fixed by unscrewing the screws so that the IO bracket comes apart and then you can then put it on a hard surface and hammer it straight. Won’t be as perfect as a new one but 100% doable.
By the way you have installed standoff screws before installing the motherboard onto the case right?
It looks like this
If not then it would explain why you weren’t able to installing the GPU in properly (the motherboard sits too deep) and in future your motherboard can short circuit as well.