Let's explore options to turn on your phone realyupset2014! I want you to have a working phone pronto! Press and hold the volume down and power keys simultaneously until phone vibrates, then release both keys, this will do a soft reset and your phone should power on. Keep us posted.
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If you plug into a win 7 or win 8 computer, then come back hours later it just might be powered up. Have found this result works for many devices including moto, htc, lg, and others.
Most of what I have read here can be solved with a simple Factory Restore of the device. I have 6 Windows Phones in my home and not a one of them have not even 1 problem, but all have been factory restored, even my Samsung s3 and my girlfriends iPhones have all been factory restored.