Radio not turning on after new Battery

I got a new battery and my radio won't turn on at all. Ik
sometimes the radio will just reset and you'll have to put in
a code for it to start working again, but in this case the
radio won't even give me the option to put in a code. I've
tried taking the Audio fuse out and back in again but it
didn't do anything, it's just dead. HELP!! I really need my
radio back. I've been driving around in silence for a week.);