iPhone Screen Replacement Problems

So I recently got my screen replaced by JetCity in Chicago for $140... two days later I dropped my phone and the screen shattered again. This time I was determined to change the screen myself. I ordered a new screen, took apart the phone without any kinks, replaced the screen, made sure everything was connected, and put the phone back together. I turned it on and all I saw was a blue vertical bar across the center of the screen, which stayed there for awhile, until the phone finished booting up and then the phone screen went into standby or whatever. I can connect the phone to the computer and it's recognized by iTunes, so everything else in the phone appears to be working except the output to the screen. Thinking it was a faulty replacement screen, I connected my old cracked screen back up, and the same blue bars appeared. I'm not sure what to do at this point. If anyone has any clue as to what the problem is, PLEASE tell me. I've had an iPhone since the original came out and I've been using a $4.99 att goPhone as a replacement and I'm slowly dying while attempting to use it day to day... I'll attach photos of what the phone now looks like when I press the home button to wake it up. Any ideas are MUCH appreciated.