I have a red samsung rant and it froze on me when i was trying to put a case on. i turned my phone off so nothing would happen while i was squeezing the case on then i turn my phone around and a screen is up frozen that looks like this

DOWNLOAD MODE
Mode: Emergency
Port: USB


its frozen like that and ive tryed almost everything and ive looked in the manual. does anybody know what to do????? please help i just got it fro christmas and theres no insurance on it!!