Why won't my Iphone 4s connect to my new HP laptop?

I just bought my laptop about 2 days ago and i downloaded itunes. As soon as i plugged in my iphone, a background noise popped up, and nothing happened. So i opened itunes and it would not show my iphone. Also in my computer, it did not register it either.

PS: i know its not a faulty cord, because i tried 3 different ones, and every time i plug it in or unplug it makes that background noise.

Did you restart your computer after installation?

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