I hit the wrong key,any Moz:lla has taken over my computer. I turned mu compurt,but this did

Hello, Moz://a has completely,taken over my computer I can not do anything on my computer. I hit the wrong key just now, and has taken over my computer before I hit the wrong I turned my computer off/on but this did not help,and can not get to my email to read your email. I can not off this page Loss my Search Bar,my Bookmarks, the Menu Bar also can some help me, I have been trying for three days to fix these problems. I loss my Search Bar,my Bookmarks, and my Menu Bar,any my Task Bar. Can someone please help me? Thank you, A, Whitman,(Old Navy Vet.) ''''''