Welcome to the forum and sorry about your phone. It sounds like you've already done what I would have tried, and I'm not getting anything from the web for a solid green light. Not being able to do a factory reset is not good, but were you sure the phone was turned off? Other than an onscreen reset the phone has to be off in order to be successful. Strange that it just decided to roll over like that. At this point I would head to a repair shop and see what they had to offer.
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