the phone wasn't charging so i opened it up and then i charged the battery only without using the battery connector but by accident the connector got damaged as it's copper strips got connected and a short circuit happened, now it doesn't have the connector and phone doesn't turn on and when connected to a computer there is no sound but if i press the volume up/down and power button there is a sound and then it disconnects if i release or hold for long. Also i would also like to know the "force boot on the tecno j8 motherboard"