endless restarting and no hard reseting

So I own a Samsung galaxy tab 2 10.1 and I have it rooted using king of roots.I was occasionaly experiencing tablet freezing and then restarting on its own.Recently,while I was away,I think it downloaded some updates or something.When I tried to look at it,it restarted and from that time it gives me only a small amount of time like 10 seconds or something and then it restarts again and again.I tried to hard reset it half a dozen of times but everytime i reboot it everything is the same and it keep restarting like before.Any ideas on how to fix this ?I would really appreciate your help here guys.