So i dropped my iPhone screen and got a replacement one, unfortunately i was reckless and ripped the cables on my new screen. When i got an alternative new screen all seemed fine but when i turned on the screen everything worked but the screen itself was unresponsive. I thought it might be a problem with screws but after several attempts the screen is still unresponsive. I have noticed that on the top part of the logic board where the digitizer goes im missing the area where i am meant to screw there is just a small orange dot. Is this a reason to why my screen wil not work, it looks like it may have been teared off and if so will this require me to get the logic board repaired or am i better off getting a new phone

http://i.imgur.com/c4smq.jpg

Thanks