Laptop went off the middle of an ongoing iphone 6 restore, now it is stuck and unreponsive.

iPhone isn't turning off after restore process with iTunes was cut short just before completion. I've tried hard and soft reset also tried to force an entry back into both the DFU and Recovery Modes but all to no avail. I really don't want the iPhone battery to die before getting a solution so I'd appreciate any form of help. Thanks in advance.