iPhone SE First Gen failing to boot up after fall

HI, my iphone SE(1st gen) dropped. Next thing i noticed is the phone was restarting. This happens when it is connected to wall power outlet and nothing happens when i connect it to computer. When connected to wall power supply, the phone flashes apple logo for about 5 seconds then screen goes off for about same time and it keeps cycling though this as long as it is connected to power supply in house. When i press the power and home buttons, somehow it brings the reboot screen asking for connection to itunes. Problem is that it goes off when i disconnected it from wall to computer and then it does not power at all when i connect to laptop no matter how long i press the home and power buttons. Any help?