Dropped, screen cracked and blank, beeping sound

Hi all,

I dropped my iPhone 4s and the screen cracked and the phone went dead as in the screen went black. I have connected it with a USB to my macbook and it sees the phone. It (the phone) is beeping away as if the power is low every 6 seconds non stop.

I have tried calling it, it doesn't ring but sounds to the caller as if it is ringing and then goes to answering machine.

I can't back up as the macbook is asking for my screencode (which I can't type in as I can't see anything as the screen is cracked and black).

I have tried the press down power and other switch several times but that magic trick isn't working for me.

Do I just need to bite the bullet and get a new one or should I go to a repair shop or what do you think? The first available genius bar meeting is a week away. I don't really fancy opening it up myself.

Has anyone had this happen and had a successful outcome somehow?

Thanks a million