Xperia Z3 :: Dead Phone Red Light Flashing

Ok today my phone was sitting on my desk not being used at all. I hadn't used it in about 30 min before that and battery was at 75%. So i was sitting there and the screen turns on by itself I thought ok phone call or text. I try to unlock the screen I noticed there was no signal bars red x and screen would not unlock it was frozen then about 5 seconds the phone turns off.
 
Now it will not power on and I have tried 3 known good chargers but the led in the top flashes red. If I press power down button led stays solid red as long as I hold power button on when on charger. If I unplug from charger power button does nothing not even power + down or up volume. I even tried little yellow reset button next to sim card nothing. Is my 4 month old phone shot? The sony companion app on pc does not find phone either this blows.