can u help me about the problem of my O+ 8.92

hello. can u help me about my andriod O+ 8.92 phone. the problem is when i open my Phone it always stock at Orange Backgroud with the Logo of the O+ and then nothing Happen. how to fix?? can u help me ? IS there anything i can do ? can u reply with the tools and Procedure that i need to do? please please!

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