|The damage done might depend on how successful you were in forcing a square peg into a round hole, so to speak, and which side of the hdmi was making contact.|
Probably first you should remove the battery and let the camera sit for a day to make sure everything is discharged then reinstall it and hope for the best. You might need a new USB cable too.
It's odd that Kayihan and others often claim to have fixed something but never say how. By the way, I have solved several of the mathematical paradox's that have puzzled the greatest thinkers for centuries but I'm not gonna tell you how. . .