Error 14 after housing replacement

I have a 5s and the rear housing was bent so I ordered a new one and followed Ifixit repair guide to replace the housing. I had reset the iphone prior to the replacement so it was like a new phone. Once i replaced the housing i plugged the charger in and it started up fine. then after a few minuets it rebooted and then stuck on the apple logo and then the screen goes blue and it restarts and repeats. I tried to restore the phone and it starts to restore the phone and again the screen goes blue and itunes shows message Error 14. Is this due to something i missed or done wrong during the replacement?

Thanks in advanced