Iphone 6 stuck in apple logo loop

A few months back my iphone 6 suddenly got stuck in the apple logo loop , i spent hours trying to get it out of the loop until i updated it without having to lose all my data , after that the phone only gets stuck in the loop when the battery runs out . But a few days ago the same thing happened again but its refusing to work even tho i tried updating it over 5 times . After the update the logo shows up again and disappears leaving a blue , red or yellow line on the screen . Is there any other way to fix the phone without restoring it ?