Chris, if the machine does not even power-on...make any fan noises,etc, then plugging in a different KB or into a different KB socket will not bring you any Joy.
A PC will startup without a KB, but will POST a no KB error.
You apparently caused a Power spike internally when you "Yanked out the KB by the Jugular"
As a desperate attempt to restart things, I would simply try switching off the Power Supply toggle switch, and then back on again. Some units reset an internal breaker in this way. Good Luck!!