Blackberry storm won't work helppp!!!

[bb_addict2]

Hey guys,
I have an unlocked blackberry storm with a cracked screen. It was working fine and now all of a sudden the end button, the menu button and the buttons on the top don't work. I can't charge the phone either (I have charged the battery in another phone so I know its not the battery) and it won't connect to my laptop.

Is the cracked screen causing these problems?
Or is it something else?
Please help thanks!

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