First off all do you have backup of your phone???
try forceboot method...this method allows you to bootloader screen
pull out out your battery then put it back to its place while pressing * and # button (make sure your battery is fully charge) or u can do sort pin.....
pull out battery then short those pin then put your battery back...
hope you understand
oh almost forget you can charge your battery using desktop charger,,, or... borrow your friend's battery