Cannot click anything in new minecraft launcher

So, i did update my launcher to the latest: 1.3.4, and i can't click anything, i'm realy stuck in the start screen from the launcher, i can't also log in to my account, because it won't go to the log in page, coul'd anyone help me? (Sorry if its already have a post like this, i'm new in here! if theres one, coul'd you send me the answer?)