I started seeing this happen I wanna say less than a week ago? Out of nowhere my galaxy would try to reboot and it'll just stay stuck rebooting without starting up until I physically take the battery out and turn it on myself and not too long after it's turned on completely it'll just restart itself and continue to try to without fully restarting and turning on. I've also had this phone since the end of March last year if that makes a difference. Now I've googled and looked around to see if people have had the same problem as me and they have but the fixes they were given didn't work for my phone. (not to mention the answers may have been outdated the most recent one I've seen was posted about 9 months ago) I just want my phone to be okay. :~(
Read more: Help my samsung galaxy reverb keeps rebooting?