Broken droid A855 digitizer/ improper instaliation/?????

[droidalex]

Ok so got my droid a yuear ago didnt but insurance broke my digitizer and it worked fine but it looked terrible so i wanted to replace it. I bought the one off amazon and put it in. Turned my phone on and it didnt work. Then I tried it agian like 4 times still didnt work took it apart agian put in my old cracked screen and that didnt work tore it apart and put it back still with the broken screen and agian didnt work. I dont think i am doing anything wrong but i am no expert so im not going to pull that out of the question.