Phone [Q] Samsung Galaxy Ace g8530 Problem

Hi,
I just Rooted my Phone and installed an rom (Galaxy S4) when it was done my Home button Didn't work anymore it didn't go to home when i clicked it but i Key-Tested the Button it is still Functional i tried everything and now it doesn't even go to Pin Screen it stays on an Gray screen anyway Fixing it?

(I Don't have an Backup)