How to fix a hard break XiaoMi Mi4 i

When update to MIUI 8 the phone restart then it wont boot up. I update via fastboot. I already send to XiaoMi center they say they also cannot reflash the rom need to put there and maybe need to change the mother board. By this cost I can buy another new phone so is there any way to fix the XiaoMi Mi4i ?

No light when charging.
No recovery menu ( Power + Volume Up )
No Fastboot ( Power + Volume Down )

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