replacement screen worked for a few minutes, then faded out

I just replaced the screen and everything was going great, but i had put the home button bracket on wrong so i opened the phone again. The screen worked great before i opened it again, but after i opened it up again and fixed the home button issue the screen started to glitch, then display white boxes on the top of the screen, then it faded to black. I thought it had just died, so i charged, but it still wont display anything. I connected it to my computer, and it detected it, but no response on the screen.