By leaving it alone, i just really put it beside me and when i looked at it, it had that Samsung screen and i needed to hard reset it. I haven't flashed any rom. I just rooted it to fix the sd card problem while running Greenify and Rom Booster.
It just happened less than 3-4 times and all i did was hold the power and volume key until it resets but damn it's scary everytime it does that. I just want to prevent it from happening.
So, that samsung thing on screen means something wrong with the tablet? I mean I also am curious on why it happens besides wanting to fix it.