Next is to let it sit for a bit... 30 minutes is usually adequate. Sometimes the communication process between the Kindle and your Mac will clear up any software protocol issues. After the 30 minutes, unplug it and try the reset procedure again (holding the power button, etc... as listed above).
If, however... the charging process didn't fix things, and the same is true for the reset, the USB plug-in procedure, and the additional reset... I'm afraid you have a hardware malfunction that will need to be examined by the Kindle repair facility.
If this is the case, you'll need to call the Amazon folks at(NNN) NNN-NNNN They'll give you a return merchandise authorization and you'll proceed from there. Though often times in lieu of repair, they'll just offer you a big discount on a new model. Might be worth looking into.
Let me know if you need anything else.
I'm sorry you aren't satisfied with my answer. However, please understand it is the most accurate and technically valid information available for your particular situation. Your Kindle needs to be examined at the repair facility.
If you'd like to change your deposit to $20, feel free to call the customer support folks at(NNN) NNN-NNNN They'll take care of you.
When it comes time to leave feedback about our session (after you click "Accept" on my answer)... I would appreciate positive feedback, since I did everything I could to assist you. There are only so many steps the user can perform... sometimes the unit just has to be sent in. The feedback system here is a reflection of the expert, not of the malfunction or the equipment. So if you feel I was professional and tried my best to help, I sure would appreciate positive feedback.
If you feel negative feedback would be more appropriate, I would certainly appreciate you letting me know before hand so I can make right whatever I have done.