Take battery out. Put back in. Hold volume down and power button until it vibrates then let power button go
Keep holding volume down until exclamation mark appears on screen. Then it's volume up,down, power, volume down
Thanks for reply, I have already managed it, tried a few of the button press options and it eventually restarted without the hard reset 'exclamation mark' on screen.
Now seamlessly downloading all my apps and settings off my Lumia 1020 from One Drive.