Sony xperia T3 blinking red-green

[Gustavo1]

My Sony Xperia T3 after the fall on the road blinking red and green and only when it is connected to the laptop. When I do a hard reset by pressing the press button and Volume + lights up blue light, but does not boot the system. When I connect it to a charger, there is a Sony logo and restarts and so constantly. Was gone motherboard or can you do, on the battery is a cell phone dead.