1. Hold down the power button for more than 10 seconds to try to forcibly restart;
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2. Determine whether the shutdown is caused by too low power, if so, please use the original charger to charge for half an hour and restart it, and the battery cannot be turned on due to too low power, the screen may not be on when the charger is just inserted, but the breathing light flashes red quickly;
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3. If the phone is powered on, press and hold down the power button on the volume at the same time when the phone is powered off, or press and hold down the power button on the volume at the same time to check whether the phone can enter the Recovery mode and Fastboot mode. If the phone can enter the above two modes, press and hold the power button for more than 10 seconds when the phone is in the two modes and try to restart it.
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4. If you press and hold for 10 seconds in the two modes in Step \"3\
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5. If the data clearing is still invalid, and the phone has logged in to the Xiaomi account and unlocked the BL lock, try Miflash wire brush;
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6. If it still cannot be turned on, it is recommended that you carry out after-sales processing.