received a Sony Ericsson Xperia X10 for Christmas 2010, and since then it has worked perfectly. However, today it turned itself off and will not turn on. I have tried taking out the battery, connecting it to a wall outlet, and my computer. The computer does not even register the phone, and the phone does not light up or show any signs of being connected. It does not even light up or show the charging screen when connected to the wall outlet. What should I do?
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