Why has my tablet not been able to turn completely on after charging?

My Samsung Note Pro Tablet was turned off, then charged up and turned on but seems it is in a mode where only the samsung name is stuck on the screen. Will not total load up, However you can clearly see that there is power due to the background has small dots dispersing behind the Samsung name....I have turned it on and off several times using the power off and volume button. What kind of mode is it in? was there an automatic update to my system? How can i Fix it?