iPhone 6s stuck on bootloop after screen replacement (With Pictures)

I have an Iphone 6s stuck on a boot loop after i changed the screen, everything was done right as I've checked my work over multiple times. The phone turns on and stays on the boot screen for about 5 minutes and shuts down and starts all over again. One thing to consider is that the phone does not have the metal plate covering the screen/camera flex cables, and it does not have the plate covering the battery flex. Could this be an issue with my camera flex? or perhaps the motherboard?, any input is appreciated.

I have attached some pictures here

Edit: The phone is recognized by itunes and enters the recovery mode screen. I don't want to update the phone but i dont mind restoring. Weird thing to note is that whenever i reset my phone (Home Button + Lock Button) the screen does a weird glitch and turns purple then shuts off.