Please help, I think I Bricked my 70D

[Graeme Campbell]

Hi,
I've had Magic lantern on my 70D for 2 years now and haven't had too many problems. I was using my camera the other day just fine and then I formatted the SD card on my pc and inserted it into my camera. The 70D did not turn on and the sd card light did not flash. The battery and the card worked as I tried them in my 6D. In the past removing the SD card and battery then reinserting them have fixed it but not this time. I have tried to reinstall ML and the 70D firmware from canon onto the card but nothing has turned the camera on. Any help would be much appreciated.
Graeme