I was using the Nexus Root Toolkit by WugFresh v1.6.3 to reinstall the factory image. For some unknown reason, the system hung. I waited 3 hours, but nothing more happened.
Now it appears as if my Nexus 7 is well and truly bricked.

By saying "nothing happens", I mean the screen stays blank.
It there anything I can do to get this tablet working again?
Now it appears as if my Nexus 7 is well and truly bricked.
- The battery is fully charged.
- When I press the power button, nothing happens.
- When I press and hold the power button, nothing happens.
- When I press the vol/down + power button, nothing happens.
- When I press and hold the vol/down + power button, nothing happens.

By saying "nothing happens", I mean the screen stays blank.
It there anything I can do to get this tablet working again?