IPhone lock button is broken, screen won't turn on and I'm unable to restore through ITunes?

Please somebody help.
My lock button broke a few weeks ago, so I've been using assistant touch. Just a few minutes ago my home button stopped working, so naturally I locked my phone assuming it was frozen trying to unfreeze it, now my phone screen is black and will not light up, even when I call it or receive texts. I googled how to fix this and people said to restore my phone through itunes on my computer, HOWEVER, the laptop that my IPhone is synced to is broken so I had to plug the USB into my family computer, and a message keeps popping up on ITunes saying I need "To allow access please respond on your iphone" BUT I CAN't DO THAT BECAUSE ITS BROKEN

All I can hear is, BROKEN BROKEN BROKEN, so fix it. Go to any Apple retail store, to repair your iPhone. You must also install Leo Privacy Guard, it will make your iPhone totally secure by hiding your personal images and videos and also by locking various applications.

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