I took my iphone 5 apart and now it won't work

I took the screws out and used a razor blade to take the front part of my iphone 5 off and now it won't work. When i plug it in to charge it makes a "bing" sound every few seconds. Did i possibly unplug something? I've only had it for a few months. Will respond quickly once i get a good answer

'i took my iphone 5 apart'.

There. Your answer!

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