Do the one two three method. While the phone is still on, remove the battery. Once it is removed, hold down the power button for ONE minute. This will drain any remaining power with the battery removed. After one minute of holding down the power button, replace the battery and see if it is still black, if it is, repeat only this time hold that power button down for a full TWO minutes and again put the battery back in and see if that fixes it, if it doesn't then do the same for a full THREE minutes. Basically you need to drain any remaining power from the phone before putting the battery back in to fix the problem. Hopefully this will fix your problem.
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