My iphone 4s doesn't connect to my computer?

I just got an iphone 4s, I have windows 7 and i have the updated version of itunes.however… When i go to plug in my iphone, my computer doesn't recognize it:/ is there anything you guys could help me do to fix the problem? Should i go to the apple store? It's kinda annoying.

Turn on your iTunes. Sometimes it doesn't auto-launch.

And if it appears as a hardware/pen drive on your windows, eject the iPhone and open iTunes.

Just remember not to open the iPhone as folder.

and ensure the iPhone is not passcode locked.

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