Can't restore/update after doing display and battery replacement.

I phone 4s, not jail broken. Replaced display and battery and phone will still not turn on. If I plug it in the phone goes into recovery mode and shows the cord and iTunes logo on the screen but will not come on when disconnected. I can use the power button to rest the phone while it is connected but all it shows is the iTunes logo and cord icon. I have powered the phone off and tried DFU mode so I'm assuming that its not u3 since I can use both buttons. I am using the stock apple USB cable that is new. All drivers are up to date on my PC and I've tried on multiple PCs. Latest version of iTunes. I've gotten back error codes 21, 1671, 2009,-37, and maybe one or two others I can not remember.

This is a family members iPhone but I have repaired plenty of androids with no problems, family members wants all the data off of the iPhone.