I replace the screen on my 4s Iphone now it won't power on?

I put a new screen on my phone as i was doing this i guess i damage the LCD or the Digitizer terminal, so this is what the shop said. So would that cause it to not power on? And is there a way to fix it? When i plug it in the phone will beep every couple of minutes. Oh i can't see and damage to the terminal.

Get it back to a repair store it may be a false contact