[q] [help] bootlop, usb not working topic

HELLO. I was running android 5.0 on my moto g, but then i downgraded to 4.4, miui v5. But I couldn't root it and couldn't also go to cwm. So I decided to flash the stock firmware using fastboot. But when it was done, the phone got a bootlop and now, when i connect it to the pc, the device isn't recognised. = pc knows, that it is connected, but cannot recognise it. And the device doesn't recognise anything. Any solutions?