inrisls400

Hi guys i was wondering if someone has run across the same problem i am having. I had a aftermarket avic d3 unit installed in my car about 3 months ago, everything was working fine until 2 days ago i was listening to the radio when it suddenly shut off on me, now it wont turn back on. So after i get out and park my car my alarm is no longer working, and by not working i mean i hold the lock button and it just beeps as if the one of the doors are open and i can't shut it of then when i hit unlock it does not unlock the doors but the trunk button still works, it's a very weird and frustrating problem but if some one can help i would really appreciate it, thanks guys.