Redmi 3 Boots Until Mi Icon

Nov 27, 2015
Have a problem with a new redmi 3. At first start , it started normally. Language, etc. could be set .
Then it made of itself a reboot and after LockScreen it went down again . Now the phone boots endlessly until Mi icon .
All hour it takes time in the menu to it after few seconds shuts down again .
Now can I ever by what you do with it ? but Fastboot mode is another Fastboot Rome I can not bottle .
Error: Device is Looked . Can someone help me?