Samsung Galaxy Ace Style won't turn completely on or at all?

6:45 am- HELP. My phone is a Samsung Galaxy Ace and recently it started turning off randomly. When I go to turn it to, a bunch of the "Unfortunately (app name) has stopped working" and it would pop up 2-3 different apps at a time. And then it was to the point where all I could do would be to hit the ignore button because I can't open any apps what so ever. Now, my phone turned off this morning after a full charge last night and I went to turn off my alarm, but the screen was frozen, so were the buttons.. So I did what almost anyone would do and take the battery out for a few. Didn't work at all.

4:36 pm- Left my phone off and home all day, Thought it could use some time off. I did get it to turn on and the "Unfortunately (app name) has stopped working" stop popping up but it still shut off again. I don't have a clue what to do.

Someone PLEASE help.